Renaming controller to migration service and other bug fixes/ validations. (#14751)

* - Added coming soon message for learn more.
- Potential fix for learn more message

* Renaming of controller to sqlMigrationService

* Surfacing some errors
-Azure account is stale error
-Migration Service creation error.

* Adding refresh azure token validation.

* Fixing some errors pointed during PR
-Fixing property names
-Fixing count

* Fixing migration status
- Adding special error handling for resource not found error
- Deleting unfound migrations from local cache
- Using prefetched migration status for view all

Misc fixes:
- Using SQL server version name instead of number
- Fixing Icons on sku recommendation page
- Fixing table column width in cutover dialog
- Adding spinner button to refresh.

* Fixing all strings in migration service page and dialog

* fixed a string error in create service dialog

extensions/sql-migration/src/api/utils.ts

@@ -21,3 +21,22 @@ export function deepClone<T>(obj: T): T {
 	});
 	return result;
 }
+
+export function getSqlServerName(majorVersion: number): string | undefined {
+	switch (majorVersion) {
+		case 10:
+			return 'SQL Server 2008';
+		case 11:
+			return 'SQL Server 2012';
+		case 12:
+			return 'SQL Server 2014';
+		case 13:
+			return 'SQL Server 2016';
+		case 14:
+			return 'SQL Server 2017';
+		case 15:
+			return 'SQL Server 2019';
+		default:
+			return undefined;
+	}
+}