Enable System credential extension on release + translations

[amddg44]

Task/Issue URL: https://app.asana.com/0/1201645688934642/1207540610577903/f
Tech Design URL:
CC:

Description:
Enables the app to be a system level credential provider on the main app target + translations and final ship review feedback

Steps to test this PR:

1. Continuing with the Alpha app target, go to Safari on iOS 18 test that the tooltip ‘Autofill’ -> ‘Passwords’ works, allowing text to be selected to fill web form fields
2. Access the list of passwords via the extension and confirm tapping on the disclosure indicator takes you to the details screen
3. Ensure selecting a password from this list still works as before
4. Change device language and confirm the extension screens are translated
5. In Xcode, under the DuckDuckGo target > Signing & Capabilities, validate that the Autofill Credential Provider capability is present on all variants (debug, alpha debug etc)

<!—
Before submitting a PR, please ensure you have tested the combinations you expect the reviewer to test, then delete configurations you know do not need explicit testing.

Using a simulator where a physical device is unavailable is acceptable.
—>

Definition of Done (Internal Only):

• Does this PR satisfy our Definition of Done?

Copy Testing:

• Use of correct apostrophes in new copy, ie ’ rather than ’

Orientation Testing:

• Portrait
• Landscape

Device Testing:

• iPhone SE (1st Gen)
• iPhone 8
• iPhone X
• iPhone 14 Pro
• iPad

OS Testing:

• iOS 15
• iOS 16
• iOS 17

Theme Testing:

• Light theme
• Dark theme

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Internal references:

Software Engineering Expectations
Technical Design Template

[github-actions]

	Fails
🚫	DesignResourcesKit: No new colors should be added to this app.

	Warnings
⚠️	PR has more than 500 lines of code changing. Consider splitting into smaller PRs if possible.

	Messages
📖	You seem to be updating localized strings. Make sure that you request translations and include translated strings before you ship your change. See Localization Guidelines for more information.

Generated by 🚫 dangerJS against 55f78d2

[amddg44]

I’ve moved this image code out to FaviconHelper as it was also needed for the password details screen

[aataraxiaa]

Tested and LGTM @amddg44 ! 🚀