feat(storage): implement multiple buckets support

[phantumcode]

• PR title and description conform to Pull Request guidelines.

Issue #, if available:

Description of changes:
Adding multi-bucket support for Amplify Storage category/plugin.
All code changes have been previously reviewed and approved:

• feat(storage): update AWSS3StoragePlugin to support multiple buckets #2895
• feat(storage): update storage API options to include bucket #2896
• feat(storage): update multipart operations to support multiple buckets/regions #2899
• chore(storage): add integration tests for multi-bucket support #2900
• chore: update BucketInfo member name #2906
• chore: fix storage list with multiple buckets #2908

The following commit was made to fix formatting/lint errors, no functional code changes were made: 05b21e6

How did you test these changes?
Changes were manually tested, unit tested, and integration tested.

Documentation update required?

• No
• Yes (storage: update android and swift storage category with multiple buckets support docs#7918)

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)

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 27.41935% with 225 lines in your changes missing coverage. Please review.

Project coverage is 43.96%. Comparing base (7f874ed) to head (de5fc34).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2904      +/-   ##
==========================================
- Coverage   44.01%   43.96%   -0.06%     
==========================================
  Files         926      931       +5     
  Lines       30485    30688     +203     
  Branches     4351     4377      +26     
==========================================
+ Hits        13419    13491      +72     
- Misses      15601    15728     +127     
- Partials     1465     1469       +4