Feature: LiveCode Suggestions Visual Studio extension

[csharpfritz]

• [x] Receive code suggestions from the Chat Room Bot, and add them as Messages to the Error List Window
• [x] We should be able to click these messages and jump directly to that file and row location

Some URLs to help with building this: https://github.com/Microsoft/VSSDK-Extensibility-Samples

Editor adornments for showing and helping place code suggestions: https://docs.microsoft.com/en-us/visualstudio/extensibility/creating-an-extension-with-an-editor-item-template?view=vs-2017

[csharpfritz]

This issue should be broken up into smaller components for management and to encourage contributions

[csharpfritz]

Interaction workflow is:

• Chatroom command issued: !code <line #>
• Bot parses command, stores suggestion and transmits through SignalR a 'new suggestion' event
• Visual Studio receives 'new suggestion' event and places entry in Error List
• Clicking entry in error list navigates to the suggested file and line
• Adornment on this line with the attached suggestion