Allow file attachments of any type

[FXZFun]

First time contributor checklist:

• I have read the README and Contributor Guidelines
• I have signed the Contributor License Agreement

Contributor checklist:

• My contribution is not related to translations.
• My commits are in nice logical chunks with good commit messages
• My changes are rebased on the latest main branch
• A npm run ready run passes successfully (more about tests here)
• My changes are ready to be shipped to users

Description

Summary:
This PR introduces an option in chat settings to enable sharing files of any type in the Desktop application, aligning it with the functionality available on other platforms.

Motivation:
Allowing the sharing of various file types significantly reduces friction for developers and technical users who need to share code, app files, etc. Repeated personal experience with this led to the creation of this PR.

Details:

• Scope: Desktop application only. Other platforms already support all file types.
• Default Setting: The option is disabled by default, requiring users to opt-in via chat settings.
• Conventions: Every effort was made to follow the conventions in the rest of the codebase. Any comments/changes are welcome.
• Testing: Manual testing confirms the UI change in settings and proper handling for upload/download of files with the setting both enabled and disabled.

Testing Environment:

• Operating System: Windows 11 x64
• Tests Conducted:
  • Verified UI changes in chat settings
  • Tested file upload/download functionality with the setting both enabled and disabled

Visuals:

Related Discussions:

• Signal Community: Don't Block Attachments

Related Issues:

Resolves #930
Resolves #3840
Resolves #3849
Resolves #5142
Resolves #6890

[indutny-signal]

Thank you so much for opening this PR! While I understand where the motivation for this feature is coming from, at this time (just as mentioned in all the issues you linked to) this isn't planned. Thus unfortunately, I have to close this Pull Request.

[computator]

Why is this not allowed, seeing as these restrictions do not exist on the mobile version? I would expect the desktop and mobile versions to have the same restrictions (or lack thereof).

I don't see any responses with an explanation or rationale in any of the linked tickets or discussions?

Thanks!