New keyboard shortcut to commit without pushing

[lightproof]

Added a keyboard shortcut for commit only (now set to alt+shift+s by default), in addition to the already existing options. For those cases when Logseq is used with local git.

This partially takes care of #40, albeit manually.

[EnderDobra]

Hi!
An additional checkStatus() is needed after operations.commit() to update status indicator.

commit: debounce(async function () {
  hidePopup();
  await commit(true, `[logseq-plugin-git:commit] ${new Date().toISOString()}`);
  checkStatus();
}), 

[lightproof]

An additional checkStatus() is needed

Done

[EnderDobra]

Thanks!
@haydenull please review.

[haydenull]

Thank you all for your efforts, sorry for the late reply.

[github-actions]

🎉 This PR is included in version 1.6.0 🎉

The release is available on GitHub release

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