Kusto Notebook Kernel Changes (#11760)

* Able to get Kernel Alias using extension registery

* Get Kernel Alias through Capability Services

* Notebook Action feature to add kusto to dropdown based on extension - complete

* Fixed indexing issue when Kusto is in kernels Dropdown

* Kusto Kernel listed properly and selected when kernel changes

* Added kernel change when user Attaches To Kusto connection

* Deleted unnecessary code/refactored

* Fix Merge Issues

* Resolving Compile issues - test file error

* Capabilities Provider Changes

* Fixed Notebook Tests

* Rearchitect kernel changes to Notebook Model

* Address minor changes

src/sql/workbench/contrib/connection/common/connectionProviderExtension.ts

@@ -26,6 +26,10 @@ const ConnectionProviderContrib: IJSONSchema = {
 			type: 'string',
 			description: localize('schema.displayName', "Display Name for the provider")
 		},
+		notebookKernelAlias: {
+			type: 'string',
+			description: localize('schema.notebookKernelAlias', "Notebook Kernel Alias for the provider")
+		},
 		iconPath: {
 			description: localize('schema.iconPath', "Icon path for the server type"),
 			oneOf: [