ci/cd pipeline

[nilotpal-n7]

include some fixes+cleanup too for many files

For ci look in the following folders (rest are cleanups)

1. .github/
2. scripts/
3. .husky/
4. CODEOWNER
5. CONTRIBUTING
6. .mergify.yml

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Whats working

1. Auto syntax fix when "git commit" (no manual "npx eslint" or "dart format")
2. Clean format and structure of code
3. Auto reviewer assign to each issue(pr)
4. Auto labeling to pr like ("frontend", "backend", "bug", "feature")
5. Pr cant be merged unless ci test passes
6. /claim any issue or unclaim
7. bot
8. handles bot flutter and web (monorepo structure)

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What need to be fixed

1. r? to change reviewer still not working
2. ping groups may not work need more info and work
3. bot not working always
4. linking ci errors to bot
5. mass rollup(like @bot rollup +r) need to be implemented