[v3] Optimize gifs packaged with vsce to reduce file size

[t1m0thyj]

What It Does

Shrinks the size of GIFs in the repo by lossless optimizing them with gifsicle: for gif in $(find packages/vsce/docs/images -name '*.gif'); do gifsicle -b -O3 $gif; done

How to Test

Review Checklist I certify that I have:

• [ ] tested my changes
• [ ] added/updated automated tests
• [ ] updated the changelog
• [ ] followed the contribution guidelines

Additional Comments

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.17%. Comparing base (54e4b0d) to head (c6babb7). Report is 2 commits behind head on next.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## next #132 +/- ## ======================================= Coverage 93.17% 93.17% ======================================= Files 73 73 Lines 718 718 Branches 55 54 -1 ======================================= Hits 669 669 Misses 49 49 ```

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