[PM-5760] Add autofill support for Spin Browser

[theRealPadster]

Type of change

• Bug fix
• New feature development
• Tech debt (refactoring, code cleanup, dependency upgrades, etc)
• Build/deploy pipeline (DevOps)
• Other

Objective

Bitwarden autofill doesn't work in Spin Browser. More details in this issue: #2848.
Spin Browser is a browser based on Firefox for mobile that adds built-in internet filtering functionality.
Website: https://spinsafebrowser.com
Google Play: https://play.google.com/store/apps/details?id=com.nationaledtech.spinbrowser

Code changes

• AutofillHelpers.cs: Added "com.nationaledtech.spinbrowser",
• AccessibilityHelpers.cs: Added new Browser("com.nationaledtech.spinbrowser", "mozac_browser_toolbar_url_view"),
• autofillservice.xml Added <compatibility-package android:name="com.nationaledtech.spinbrowser" android:maxLongVersionCode="10000000000"/>
• Some trailing whitespace was also auto-removed from AutofillHelpers.cs and AccessibilityHelpers.cs

Before you submit

• Please check for formatting errors (dotnet format --verify-no-changes) (required)
• Please add unit tests where it makes sense to do so (encouraged but not required)
• If this change requires a documentation update - notify the documentation team
• If this change has particular deployment requirements - notify the DevOps team

[CLAassistant]

All committers have signed the CLA.

[bitwarden-bot]

Thank you for your contribution! We've added this to our internal Community PR board for review.
ID: PM-5760