Implements async API AmplifyInProcessReportingOperation for use with Storage and any InProcessReporting operation

[brennanMKE]

Issue #, if available:

#2056

Description of changes:

The code below will not work with any instance of AmplifyInProcessReportingOperation which will report using the generic types for InProcess, Success and Failure.

for try await element in operation.sequence {
    switch element {
    case .inProcess(let progress):
        print("Progress: \(progress)")
    case .success(let success):
        print("Success: \(success)")
    case .failure(let error):
        print("Error: \(error)")
    }
}

Check points: (check or cross out if not relevant)

• [ ] 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
• [ ] 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.