Switch to Weblate for translations

[balporig]

Feature Description

Weblate is free and opensource localization tool. The hosted version https://hosted.weblate.org/ is free for libre projects. It can also be selfhosted and it will make sense when gitea repo is moved to https://gitea.com/ from github

Screenshots

No response

[delvh]

(Partial) Duplicate of #17081

I'm not closing this issue, however, as the switch to Weblate wasn't the intention of the other issue, and it is good to have its own issue for it.

[throwaway-d]

+1

Surprised that Gitea used Crowdin!

[lafriks]

Weblate imho is missing multiple features that we need:

• More granular permission system (allow to set proofreaders for each language that can approve translations)
• Translations should not be pushed back to git if proofreader has not approved them (Do not commit changes for a translation that needs approval from a reviewer WeblateOrg/weblate#3745)

Taking into account this I don't see how we could currently move gitea translation process to Weblate even through I like it and otherwise is great product.

I will close this issue currently but we can definitely revisit this issue once issues mentioned above have been implemented in Weblate