Add Git Hooks to run lint

[PikachuEXE]

Pull Request Type
Please select what type of pull request this is:

• Feature Implementation

Related issue
Smaller version of #1171

Description
For new comers not coming from #1171
Git Hooks is Git has a way to fire off custom scripts when certain important actions occur. (quote from official doc)
There are client-side and server-side hooks but this PR is only about the client-side hooks.

For all available hook events and other stuff about Git Hooks see:
https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks

Summary of changes

• Add git hook via lefthook
• Git Hook scripts are generated by lefthook when installed via yarn, no extra step required
• Add a pre-commit hook to run eslint on every commit which lints staged (about to be committed) files only (faster) where the filenames end with js/ts/vue

lefthook is picked as git hook manager due to

• Written in Go
  • Go language makes Lefthook lightning-fast and provides support for concurrently executed scripts out of the box.
  • It can be installed without too many dependencies on many environments via different methods (But since we use yarn, just use yarn)
• Run multiple commands in one hook, in sequence or in parallel (simple-git-hooks can't run commands in parallel)
• Installing lefthook via npm/yarn will generate git hook scripts in your git hook path
  • No extra setup step = no chance for forgetting to setup git hook

Read the introduction post for lefthook if you interested in finding out more

PR Purpose
Lint task is sometimes NOT run by the PR submitter (including me!)
I know we have server side GH Action checks to ensure
So this is just an dev process improvement which should add just a little time to commit changes

Also #1171 is too big to review and merge

Screenshots (if appropriate)
Code Change Diff (for testing linting)

Git output

Testing (for code that is not small enough to be easily understandable)

• Make change(s) violating any lint rule
• Commit those changes

Desktop (please complete the following information):

• OS: MacOS
• OS Version: 11.6
• FreeTube version: based on 84ac98f

Additional context
Add any other context about the problem here.

[efb4f5ff-1298-471a-8973-3d47447115dc]

LGTM

[PikachuEXE]

All requested changes in #1788 (review) made

[PikachuEXE]

@ChunkyProgrammer ~

[efb4f5ff-1298-471a-8973-3d47447115dc]

@ChunkyProgrammer one more approval needed. Review if u have some spare time please

[ChunkyProgrammer]

No idea how I missed the notifications for this one. This looks good to me. I'll approve it now. (There are newer versions of lefthook available so maybe it should be upgraded soon?)

[PikachuEXE]

Crap I forgot to update the lefthook version