feat/migrate to npm from yarn

[Raushan998]

What github issue is this PR for, if any?

Resolves #6164

What changed, and why?

• .dockerignore (modified)
• .github/labeler.yml (modified)
• .github/workflows/ci.yml (modified)
• .github/workflows/rspec.yml (modified)
• .github/workflows/rspec_parallel.yml (modified)
• .github/workflows/yarn_lint_and_test.yml (modified)
• .gitignore (modified)
• .tool-versions (modified)
• Dockerfile (modified)
• Procfile.dev (modified)
• README.md (modified)
• bin/git_hooks/build-assets (modified)
• bin/git_hooks/lint (modified)
• bin/git_hooks/update-dependencies (modified)
• bin/lint (modified)
• bin/setup (modified)
• bin/update (modified)
• doc/DOCKER.md (modified)
• doc/LINUX_SETUP.md (modified)
• doc/MAC_SETUP.md (modified)
• doc/NIX_SETUP.md (modified)
• doc/WSL_SETUP.md (modified)
• docker/build-assets (modified)
• flake.nix (modified)
• yarn.lock (deleted)

Above files changes has been modified or changed where it has been found yarn availability.

How is this tested? (please write tests!) 💖💪

This have been tested over local using npm run test command. Attaching the snapshot for test.

Feelings gif