Add URIs for Issue Comments
Update comment to accurately reflect what the method does
Translating my english to sensical.
Create IIssuesCommentClient
Add IssueComment class and bare bones IssueCommentsClass

Also rename IIssuesCommentClass to IISsueCommentsClass
Fix outputs to be IssueComment
fix id name and document html url
Create the functions to work with issue comments.
Added tests
Fix some of the tests
All Tests pass now.
Touch up tests

Check Get method for empty strings
Assert a value on the json serializer
New up IssueCommentsClient() for Ctor test
Get rid of un-necessary using
Add a way to get to the comments
Create IObservableIssueCommentsClient
Create ObservableIssueCommentsClient
Fix up NetCore45
Finish up ObservableIssueCommentsClient
Add first tests and make public
Finish adding tests.