Setup Gitpod for this project

[harsh183]

I took a stab at it and it might have some complications but it seems worthwhile.

For context Gitpod is a VSCode based Cloud IDE that gets you started with the github URL.
https://gitpod.io/#https://github.com/dsc-umass/project-matching

Literally click that link and it clones the project and sets up some repo things.

Then just perform these steps and create a Pull Request. The docker step might might pose complexity so @abhinavtripathy can help out as well.

Once you're done you can add a badge like

[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/dsc-umass/project-matching)

[harsh183]

I tried using this but it's still missing a few things.

• The gemfile has ruby version 2.7 but the system has 2.6.6 installed. Maybe we can just remove the ruby version from the gemfile?

• PostgreSQL is not installed - following this might be helpful

• The yarn packages had some integrity issue so I had to run a command for that

• The system greets us with the warning

   [DEPRECATED] The `--without` flag is deprecated because it relies on being remembered across bundler invocations, which bundler will no longer do in future versions. Instead please use `bundle config set without 'production'`, and stop using this flag