Add support for deploying Nested Applications

**Issue:**
There appears to be no way deploy a nested application

Using a nested local application referenced in the template as documented here:
https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-template-nested-applications.html requires the "CAPABILITY_AUTO_EXPAND" capability to be specified as documented here: https://docs.aws.amazon.com/serverlessrepo/latest/devguide/acknowledging-application-capabilities.html

There does not appear to be a way to specify this using the AWS Tookit for Visual Studio.
Since there is a hard limit 200 of resources, its seems there is no way to deploy an application using the toolkit with more than 200 resources.

**To reproduce**
1. Specify _A.yaml_ to use in _aws-lambda-tools-defaults.json_
2. In _A.yaml_, reference _B.yaml_ locally, using a resource of type: _AWS::Serverless::Application_

Reproduce the deployment using aws-lambda-tools-defaults.json with A.yaml referencing local B.yaml as an AWS::Serverless::Application. Start by tracing how the AWS Toolkit for Visual Studio passes deployment capabilities, then verify that nested applications deploy successfully when CAPABILITY_AUTO_EXPAND is handled.

Written by the indexing model from the issue text.