Add "Community App Sources" translation and button to Add App Screen

[Erengun]

Resolves #1727

This pull request introduces a new button labeled "Community App Sources" to the AddAppPage. When clicked, this button will open an external application with the URL: https://apps.obtainium.imranr.dev/. Translations for the "Community App Sources" label have been included for multiple languages to ensure international support.

Changes in this PR:

• Added a "Community App Sources" button on the AddAppPage
• Integrated translations for the button text across various languages
• Launched an external URL when the button is clicked

Screenshots:

Dark Mode

Light Mode

[ImranR98]

We already have a link to this on the settings page. I agree with putting it on the add app page too, but this button is too prominent. Maybe we could have it on the bottom right, styled similarly to the "Supported Sources" link. Shortened to something like "Crowdsourced App Configs", it should fit on one line on most screens.

[Erengun]

Hey @ImranR98 , thanks for the feedback! As you suggested, I’ve moved the button to the bottom right and styled it similarly to the "Supported Sources" link. I’ve also shortened the text to "Crowdsourced App Configs", so it fits on one line on most screens.

To give you options, I’ve placed the button:

• In a row at the bottom right (similar to "Supported Sources")
• In a column, both with left alignment and center alignment for comparison.

Take a look at the screenshots below and let me know which placement you think works best:

Row aligned (Bottom Right)

Column Left aligned

Column Center aligned

[ImranR98]

Thanks. Row aligned (bottom right) looks good.

[Erengun]

Then its committed and Ready for review. @ImranR98