* Support notebook file types contribution
- Extensions can define a provider and what file types it should be used for
- Verified that this works for Jupyter Content & Server Managers.
- Starts Jupyter server as expected
Not in this PR:
- Support for session manager end to end
- Tests
- Defines a new NotebookService in Azure Data Studio which will be used to interact with notebooks. Since notebooks can require per-file instantiation the provider is just used to create & track managers for a given URI.
- Inject this into notebook.component.ts and pass required parameters that'll be used to properly initialize a manger into the method. Actual initialization not done yet.
- Port over & recompile notebook model code
- Define most required APIs in sqlops.proposed.d.ts. In the future, these will be used by extensions to contribute their own providers.
