Tables: Implement support for constructing TableServiceClient with a full connection string

[christothes]

Summary

Implement a constructor on TableServiceClient that accepts a full connection string as found in the azure portal.

Scope of Work

• TableServiceClient ctor accepts a full connection string

Success Criteria

• TableServiceClient ctor properly parses connection string into a 'TableSharedKeyCredential` and leverages it for auth to the table service

Related Issues and References

azure-sdk-for-net/sdk/storage/Azure.Storage.Common/src/Shared/StorageConnectionString.cs

Line 239 in 3065b59

public static StorageConnectionString Parse(string connectionString)