feat: allow dotenv-vars to be configured when deploying

[xel1045]

This pull request introduces a new deployment task to handle .env variable updates during the deployment process in the Envoy.blade.php file. The most important changes include defining and processing .env variables, adding a new deployment task for .env updates, and integrating this task into existing deployment flows.

New .env Variable Handling:

• Added logic to parse and filter .env variables from the $dotenvVars string into an array for further processing. (Envoy.blade.php, Envoy.blade.phpR7-R8)

New Deployment Task:

• Introduced a new deploy:dotenv task to update .env files during deployment. This task iterates over the parsed .env variables, processes them, and updates the .env file using the sed command. (Envoy.blade.php, Envoy.blade.phpR261-R275)

Integration into Deployment Flow:

• Integrated the deploy:dotenv task into the deployment sequence by adding it to the task lists for deploy and deploy:provisioned. (Envoy.blade.php, [1] [2]