* Allow using workspace typescript.tsdk setting

Allows users to opt into using their workspace typescript.tsdk setting to specify the path to their typescript install.

Also, fixes a bug when the global tsdk setting points to the workspace version of typescript, our ts selector interface can get confused on which version is currently active. The fix adds a check using the local storage value to show the correct active version.

* Flip vscode and workspace pick order

* Use shared logic when workspace tsdk setting is not used

**Bug**
When the global tsdk setting points to the workspace version of typescript, our ts selector interface can get confused on which version is currently active

**Fix**
Adds a check using the local storage value to show the correct active version

* Support In Document links inside of the markdown editor

Fixes #17288

* Cleaning up code to reduce duplication

* Show warning on first load of workspace with typescript.tsdk setting

Shows a prompt when a user first loads a workspace with a `typescript.tsdk` setting in the  workspace.

* Also show message on first load in case where workspace has local version of TS

* Use quick pick. Added restart message

* Rename intellisense

fixes #19438