Added the consumer file with the rules for client facing obfustication

[pacific-ring]

Description

Adds consumer ProGuard/R8 keep rules (universal_components/consumer-rules.pro) so that
apps consuming this library can safely enable minification without breaking the MFA flows.

Two classes of runtime reflection are protected:

• Auth0 SDK Gson models (com.auth0.android.result.** + the AuthenticationMethod$Deserializer
  polymorphic adapter) — deserialized via reflection, so R8 would otherwise strip the
  fields/classes and Gson would fail with a0.sdk.internal_error.unknown.
• AuthenticatorType enum — used as a kotlinx.serialization-backed Compose Navigation
  argument and resolved by fully qualified name at runtime, so its name must not be obfuscated.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code refactoring
• Performance improvement
• Test improvement

Testing

• Unit tests
• Manual testing
• Sample app testing

Test Configuration:

• Android version(s):
• Device(s):

Screenshots (if appropriate)

Uploading Screen_Recording_20260623_140839_manmohan-sample-ui-components-android.mp4…

Checklist

• I have read the Auth0 general contribution guidelines

• I have read the Auth0 Code of Conduct

• All existing and new tests complete without errors