Arch packages implementation

[ExplodingDragon]

close #25037

This Commit was created by d1nch8g (#25396).

Sources: https://ion.lc/core/gitea

This PR adds a package registry for Arch Linux packages with support for package files, signatures, and automatic pacman-database management.

Features:

1. Push any tar.zst package and Gitea sign it.
2. Delete endpoint for specific package version and all related files
3. Supports trust levels with SigLevel = Required.
4. Package UI with instructions to connect to the new pacman database and visualised package metadata

You can follow this tutorial to build a *.pkg.tar.zst package for testing

Co-authored-by: d1nch8g@ion.lc
Co-authored-by: @KN4CK3R
Co-authored-by: @silverwind

[ExplodingDragon]

TODO:

• Package signatures should be managed by Gitea, custom signatures will result in inconsistencies with index signatures.
• Signatures should not be saved under properties
• Pacman DB should not be generated on-the-fly, it needs to be added when uploaded
• We should not support overwrite uploads, which breaks the structure, and should perform a delete operation before uploading.
• Fix documentation errors .

[KN4CK3R]

When #25396 was closed some weeks ago, I adopted the PR and rewrote it to look similar to how the other package registries work. I will push my changes next week, then we could compare with this PR and decide how we continue.

[ExplodingDragon]

When #25396 was closed some weeks ago, I adopted the PR and rewrote it to look similar to how the other package registries work. I will push my changes next week, then we could compare with this PR and decide how we continue.

@KN4CK3R My implementation is not perfect, in fact, I just refactored the original pr and delegated its signature to Gitea to manage, like #27069.