feat(Auth): Adding forceAliasCreation option during confirmSignUp

[harsh62]

Description

Adding the ability to pass forceAliasCreation flag during confirming sign up. Usage:

      let pluginOptions = AWSAuthConfirmSignUpOptions(
            forceAliasCreation: true)
        let options = AuthConfirmSignUpRequest.Options(pluginOptions: pluginOptions)
        let result = try await self.plugin.confirmSignUp(
            for: "<username>",
            confirmationCode: "<confirmationCode>",
            options: options)

General Checklist

• Added new tests to cover change, if needed
• Build succeeds with all target using Swift Package Manager
• All unit tests pass
• All integration tests pass
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• New or updated tests include Given When Then inline code documentation and are named accordingly testThing_condition_expectation()
• If breaking change, documentation/changelog update with migration instructions

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

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3c7fec5) 68.10% compared to head (1edc681) 68.18%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3382      +/-   ##
==========================================
+ Coverage   68.10%   68.18%   +0.07%     
==========================================
  Files        1080     1080              
  Lines       36343    36347       +4     
==========================================
+ Hits        24753    24782      +29     
+ Misses      11590    11565      -25     

Flag	Coverage Δ
API_plugin_unit_test	67.50% <ø> (ø)
AWSPluginsCore	64.14% <ø> (ø)
Amplify	48.10% <ø> (ø)
Analytics_plugin_unit_test	81.16% <ø> (ø)
Auth_plugin_unit_test	79.02% <100.00%> (-0.02%)	⬇️
CoreMLPredictions_plugin_unit_test	59.44% <ø> (ø)
DataStore_plugin_unit_test	81.90% <ø> (+0.40%)	⬆️
Geo_plugin_unit_test	70.75% <ø> (ø)
Logging_plugin_unit_test	62.87% <ø> (ø)
Predictions_plugin_unit_test	37.16% <ø> (ø)
PushNotifications_plugin_unit_test	87.13% <ø> (ø)
Storage_plugin_unit_test	77.51% <ø> (ø)
unit_tests	68.18% <100.00%> (+0.07%)	⬆️

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