feat(authenticator): Add support for Compose autofill

[mattcreaser]

• PR conforms to Pull Request guidelines.

Issue #, if available: #247

Description of changes:

How did you test these changes?

• Verified sign-in information saved to password manager when creating account
• Verified sign-in information autofilled from password manager when signing in
• Verified sign-in information updated when resetting password

Documentation update required?

• No
• Yes (Please include a PR link for the documentation update)

General Checklist

• Added Unit Tests
• Added Integration Tests
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Ensure commit message has the appropriate scope (e.g fix(liveness): message, fix(authenticator): message, fix(all): message)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Attention: Patch coverage is 49.29577% with 36 lines in your changes missing coverage. Please review.

Project coverage is 32.69%. Comparing base (6abe43e) to head (1f1e55d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #252      +/-   ##
==========================================
+ Coverage   31.79%   32.69%   +0.90%     
==========================================
  Files          97      100       +3     
  Lines        4539     4569      +30     
  Branches      530      542      +12     
==========================================
+ Hits         1443     1494      +51     
+ Misses       2980     2952      -28     
- Partials      116      123       +7     

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