Makes git-cliff-completions and git-cliff-mangen optional feature

[azzamsa]

Is your feature request related to a problem? Please describe.
We prefer to install git-cliff via cargo-binstall. It fetches the binary directly from the Github release. However, the compressed file only contains git-cliff binary, missing git-cliff-completions and git-cliff-mangen. Making the installations fails.

Describe the solution you'd like
Use required-features to makes git-cliff-completions and git-cliff-mangen optional.

Describe alternatives you've considered
Provide git-cliff-completions and git-cliff-mangen binary in the release file.

Additional context
Related:

• git-cliff: instead of finding git-cliff. It tries to install git-cliff-completions and git-cliff-mangen cargo-bins/cargo-binstall#387 (comment)

[azzamsa]

If this is OK, I am ready to make a PR.

[orhun]

Sounds good, feel free to submit a PR!

[azzamsa]

Reading the-required-features-field documentation multiple times doesn't give my any clue. Googling also doesn't help.

I opened a draft PR #118 here. But I have no clue of what I am doing.

Would you like to give me some guidance?

[orhun]

I'm not sure if #118 changes anything. It just adds an empty required-features to both binaries. I'd rather go with the second approach and include the binaries in the release assets.

[orhun]

We now include those binaries in releases: 9a070b2