Backend dev env setup docs

docs/backend/env-setup/_dynamodb-offline-setup/index.mdx

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+DynamoDB will be run locally using the `serverless-dynamodb-local` plugin.
+
+The `serverless-dynamodb-local` plugin requires
+
+- `serverless@^1` (installed in the [previous step](#install-serverless-cli))
+- `Java Runtime Engine (JRE)` version 6.x
+
+1. Install plugin
+
+   ```bash
+   npm install --save serverless-dynamodb-local
+   ```
+
+2. Then in `serverless.yml` add following entry to the plugins array: `serverless-dynamodb-local`
+
+   ```yaml
+   plugins:
+     - serverless-dynamodb-local
+   ```
+
+3. Install `DynamoDB` locally
+
+   ```bash
+   sls dynamodb install
+   ```
+
+4. Run `DynamoDB` locally
+
+   ```bash
+   sls dynamodb start
+   ```
+
+   This starts the DynamoDB Local instance as a local Java program (default: [http://localhost:8000](http://localhost:8000))

docs/backend/env-setup/_poetry-setup/_poetry-macos-linux.mdx

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+### Step 1. Install Poetry
+
+Run the following with bash
+
+```bash
+curl -sSL https://install.python-poetry.org | python3 -
+```
+
+### Step 2. Add Poetry to your `PATH`
+
+The installer creates a `poetry` wrapper in
+
+- `$HOME/.local/bin` on Unix
+- `$POETRY_HOME/bin` if `$POETRY_HOME` is set.
+
+If this directory is not present in your `$PATH`, you can add it in order to invoke Poetry as `poetry` _(zshrc/bash_profile)_.
+
+### Step 3. Use Poetry
+
+Once Poetry is installed and in your $PATH, you can execute the following
+
+```bash
+poetry --version
+```

docs/backend/env-setup/_poetry-setup/_poetry-windows.mdx

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+### Step 1. Install Poetry
+
+Run the following with PowerShell
+
+```powershell
+(Invoke-WebRequest -Uri https://install.python-poetry.org -UseBasicParsing).Content | py -
+```
+
+:::info
+If you have installed Python through the Microsoft Store, replace py with python in the command above.
+:::
+
+### Step 2. Add Poetry to your `PATH`
+
+The installer creates a `poetry` wrapper in `%APPDATA%\Python\Scripts` on Windows.
+
+If this directory is not present in your `$PATH`, you can add it in order to invoke Poetry as `poetry`.
+
+### Step 3. Use Poetry
+
+Once Poetry is installed and in your $PATH, you can execute the following
+
+```bash
+poetry --version
+```

docs/backend/env-setup/_poetry-setup/index.mdx

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+```mdx-code-block
+import OsTabs from "@site/src/components/DocsFeatures/OsTabs.tsx"
+```
+
+The installer script is available directly at [install.python-poetry.org](https://install.python-poetry.org/). The script can be executed directly (i.e. `curl python`) or downloaded and then executed from disk (e.g. in a CI environment).
+
+```mdx-code-block
+import PoetryWindows from "./_poetry-windows.mdx"
+import PoetryMacOSLinux from "./_poetry-macos-linux.mdx"
+
+<OsTabs
+    windows={<PoetryWindows />}
+    macos={<PoetryMacOSLinux />}
+    linux={<PoetryMacOSLinux />}
+/>
+```

docs/backend/env-setup/_python-setup/_python-linux.mdx

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+### Ubuntu
+
+[deadsnakes PPA](https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa) contains more recent Python versions packaged for Ubuntu.
+
+```bash
+$ sudo apt-get install software-properties-common
+$ sudo add-apt-repository ppa:deadsnakes/ppa
+$ sudo apt-get update
+$ sudo apt-get install python3.8
+```
+
+### Other Linux distribution
+
+If you are using other Linux distribution, `Python 3` is most likely preinstalled. If not, use your distribution's package manager to install it.
+
+For example, on Fedora, you would use `dnf`:
+
+```bash
+$ sudo dnf install python3
+```
+
+And on ArchLinux, you would use `pacman`:
+
+```bash
+$ sudo pacman -S python
+```
+
+To check if it is installed correctly:
+
+```bash
+python --version
+# Python 3.10.7
+```

docs/backend/env-setup/_python-setup/_python-macos.mdx

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+1. Download the `Python` installer package from the [official Python website](https://www.python.org/downloads/)
+1. It should detect your operating system and show a yellow download button. If it doesn’t, click the `macos` link and choose the latest Python release.
+1. Once the download is complete, double-click the package to start installing `Python`. Follow the installation steps with the default settings.
+1. Once installation is complete, you have python installed on your system!
+
+To check if it is installed correctly:
+
+```bash
+python --version
+# Python 3.10.7
+```

docs/backend/env-setup/_python-setup/_python-windows.mdx

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+1. Download the `Python` installer package from the [official Python website](https://www.python.org/downloads/)
+1. It should detect your operating system and show a yellow download button. If it doesn’t, click the `windows` link and choose the latest Python release.
+1. Once the download is complete, double-click the package to start installing `Python`. Follow the installation steps with the default settings.
+1. Once installation is complete, you have python installed on your system!
+
+To check if it is installed correctly:
+
+```bash
+py --version
+# Python 3.10.7
+```
+
+:::info
+If you have installed Python through the Microsoft Store, replace py with python in the command above.
+:::

docs/backend/env-setup/_python-setup/index.mdx

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+```mdx-code-block
+import OsTabs from "@site/src/components/DocsFeatures/OsTabs.tsx"
+```
+
+```mdx-code-block
+import PythonWindows from "./_python-windows.mdx"
+import PythonMacOS from "./_python-macos.mdx"
+import PythonLinux from "./_python-linux.mdx"
+
+<OsTabs
+    windows={<PythonWindows />}
+    macos={<PythonMacOS />}
+    linux={<PythonLinux />}
+/>
+```

docs/backend/env-setup/_serverless-cli-setup/index.mdx

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+Install the `serverless` CLI via NPM:
+
+```bash
+npm install -g serverless
+```
+
+That's all!

docs/backend/env-setup/index.mdx

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+---
+sidebar_position: 1
+---
+
+import PythonSetup from './_python-setup/index.mdx';
+import PoetrySetup from './_poetry-setup/index.mdx';
+import DynamoDBSetup from './_dynamodb-offline-setup/index.mdx';
+import ServerlessCLISetup from './_serverless-cli-setup/index.mdx';
+
+# Environment Setup
+
+Backend devs should have the following installed and configured as described below:
+
+## Install `Python 3.x`
+
+<PythonSetup />
+
+## Install `poetry`
+
+<PoetrySetup />
+
+## Install `nvm` & `node.js`
+
+Follow the instructions to install `nvm` & `node.js` [here](/docs/getting-started/node-nvm)
+
+:::info Reminder
+Use nvm to switch between versions of `node.js` across projects
+:::
+
+## Install `serverless` cli
+
+<ServerlessCLISetup />
+
+## Install `dynamodb` offline
+
+<DynamoDBSetup />