Adding database specific settings, cancel migration and other dark UI fixes (#14626)

* Made dashboard dark ui compat

* foundations for sql vm

* WIP

* Added cancel migration
Added refresh migraiton table
Added multi db config

* disabling cancel migration button if the migration is not in progress.

* Addressing some PR based coments
- Removing (s) from loc strings
- Adding return type to cancel migration
- removing _ from public vars
- localizing strings
- Adding name to dialogs for telemetry

* Adding todo comment for offline mode

extensions/sql-migration/src/dialog/assessmentResults/assessmentResultsDialog.ts

@@ -128,6 +128,7 @@ export class AssessmentResultsDialog {
 	protected async execute() {
 		this.model._migrationDbs = this._tree.selectedDbs();
 		this.skuRecommendationPage.refreshDatabaseCount(this._model._migrationDbs.length);
+		this.model.refreshDatabaseBackupPage = true;
 		this._isOpen = false;
 	}