feat: github release integration

[pi0]

Usage:

changelogen gh release <versions...>

(more usage is updated in the docs)

[codecov]

Codecov Report

Merging #67 (f10676c) into main (a5ab510) will decrease coverage by 10.69%.
The diff coverage is 46.07%.

@@             Coverage Diff             @@
##             main      #67       +/-   ##
===========================================
- Coverage   84.07%   73.39%   -10.69%     
===========================================
  Files           6        7        +1     
  Lines         559      733      +174     
  Branches       80       86        +6     
===========================================
+ Hits          470      538       +68     
- Misses         89      195      +106     

Impacted Files	Coverage Δ
src/github.ts	19.11% <19.11%> (ø)
src/config.ts	93.54% <100.00%> (+1.78%)	⬆️
src/index.ts	100.00% <100.00%> (ø)
src/markdown.ts	97.19% <100.00%> (+0.59%)	⬆️
src/repo.ts	100.00% <100.00%> (ø)
src/git.ts	88.66% <0.00%> (+1.73%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[atinux]

Beautiful 💯

I still like the idea of open GitHub to create/update the release so you don't even need to ask user for a GitHub token

[pi0]

Agreed it is not always convinient to require a token!

We have two ideas:

• Show link to open GitHub create release page with prefilled contents if there is no token (not in this PR)
• A GitHub action that syncs the release (Generates changelog to GitHub Releases in Actions #32) which can built on the same sync feature and auto-provided github token in the action

[atinux]

Show link to open GitHub create release page with prefilled contents if there is no token (not in this PR)

Release it open the link in browser directly but I like the idea of showing the url :)

GitHub action is a nice idea as well but will need documenting

[pi0]

Thanks for the feedback and ideas! I have added a fallback mechanism for manual release:

[pi0]

Man, i love this PR 😆