Adds AWSPaginator attribute to methods in Paginator Factory interface that PowerShell consumes

[afroz429]

Description

AWS Tools for PowerShell's(AWS PS) auto-iteration implementation requires metadata for paginators. This PR adds AWSPaginator attribute to Paginator methods in the Paginator Factory interface. AWS PS will use this metadata for auto-iteration implementation.
The attribute properties that are being added are InputToken, LimitKey and OutputToken.

Added following generated files for review

• sdk/src/Services/AccessAnalyzer/Generated/Model/_bcl45+netstandard/IAccessAnalyzerPaginatorFactory.cs
• sdk/src/Services/SimpleWorkflow/Generated/Model/_bcl45+netstandard/ISimpleWorkflowPaginatorFactory.cs

Motivation and Context

Add metadata that AWS PS can use for generating auto-iteration.

Testing

DRY Run succeeded.
Tested AWS PS generation code after copying the assemblies and verifying that the attributes are readable.

            var pageFactoryInterfaceTypeName = string.Format("{0}.Model.I{1}PaginatorFactory", CurrentModel.ServiceNamespace, CurrentModel.AssemblyName);
            
            var pageFactoryInterfaceType = CurrentServiceAssembly.GetType(pageFactoryInterfaceTypeName);

            if (pageFactoryInterfaceType != null)
            {
                var pageFactoryInterfaceMethods = pageFactoryInterfaceType.GetMethods().OrderBy(m => m.Name).ToList();
                foreach (var pageFactoryMethod in pageFactoryInterfaceMethods)
                {
                    dynamic awsPaginatorFactoryAttribute = pageFactoryMethod
                        .GetCustomAttributes().SingleOrDefault(attribute =>
                            attribute.GetType().FullName == "Amazon.Runtime.Internal.AWSPaginatorAttribute");
                    if (awsPaginatorFactoryAttribute != null)
                    {
                        if (awsPaginatorFactoryAttribute.LimitKey == null)
                        {
                            Console.WriteLine("limitkey null");
                        }
                        Console.WriteLine(awsPaginatorFactoryAttribute);
                    }
                }
            
            }

Screenshots (if appropriate)

Types of changes

• 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 change)

Checklist

• My code follows the code style of this project
• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have read the README document
• I have added tests to cover my changes
• All new and existing tests passed

License

• I confirm that this pull request can be released under the Apache 2 license