Add build workflow

.github/workflows/build.yml

@@ -0,0 +1,49 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - "main"
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+  pull_request:
+    branches:
+      - "main"
+
+jobs:
+  build:
+    name: Build & Publish
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install GitVersion
+        uses: gittools/actions/gitversion/setup@v3.2.1
+
+      - name: Determine Version
+        id: gitversion
+        uses: gittools/actions/gitversion/execute@v3.2.1
+        with:
+          useConfigFile: true
+          configFilePath: GitVersion.yml
+
+      - name: Install NPM Packages
+        shell: pwsh
+        run: npm i
+
+      - name: Build Project
+        shell: pwsh
+        run: npm run build
+
+      - name: Publish to NPM
+        if: startsWith(github.ref, 'refs/tags/')
+        shell: pwsh
+        run: |
+          npm version ${{ steps.gitversion.outputs.fullSemVer }} --no-git-tag-version
+          npm publish --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

GitVersion.yml

@@ -0,0 +1,28 @@
+mode: ContinuousDelivery
+branches:
+  main:
+    label: beta
+    increment: Minor
+    regex: ^main$
+    is-main-branch: true
+    source-branches: []
+  pull-request:
+    label: alpha
+    increment: Minor
+  feature:
+    label: alpha
+    increment: Minor
+    regex: ^feature/?
+    is-main-branch: false
+    source-branches:
+      - main
+  hotfix:
+    label: alpha
+    increment: Patch
+    regex: ^(?:hot)?fix/?
+    is-main-branch: false
+    source-branches:
+      - main
+ignore:
+  sha: []
+merge-message-formats: {}

README.md

@@ -1,4 +1,5 @@
 # Flexsaber
+[![Build](https://github.com/mikeleg/flexsaber/actions/workflows/build.yml/badge.svg?branch=main)](https://github.com/mikeleg/flexsaber/actions?query=workflow%3A%22Build%22)
 
 ![Flexsaber Logo](./logo.png)