gig: Add version 0.8.3

[matracey]

This PR adds gig, a command-line application to generate .gitignore files using the toptal/gitignore repository of .gitignore templates.

For more on this module, check out the repo shihanng/gig.

• [x] I have read the Contributing Guide.

[matracey]

/verify

[github-actions[bot]]

All changes look good.

Wait for review from human collaborators.

gig

• [x] Description
• [x] License
• [x] Hashes
• [x] Checkver
• [x] Autoupdate
• [x] Autoupdate Hash Extraction

[github-actions[bot]]

All changes look good.

Wait for review from human collaborators.

gig

• [x] Description
• [x] License
• [x] Hashes
• [x] Checkver
• [x] Autoupdate
• [x] Autoupdate Hash Extraction