Setup component governance

[DonJayamanne]

• [x] Extension name/id
• [x] Readme links
• [x] Issue Template
• [x] CI (yaml) - Cannot be done until we have a public project
• [x] Component gov

[IanMatthewHuff]

Validated. Not fully sure on validation until we release. But we have the ADO area now.

https://dev.azure.com/ms/vscode-aitools/_componentGovernance/167158?_a=components&typeId=-2