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/constants/iconPathHelper.ts

@@ -22,6 +22,8 @@ export class IconPathHelper {
 	public static inProgressMigration: IconPath;
 	public static completedMigration: IconPath;
 	public static notStartedMigration: IconPath;
+	public static sqlVmLogo: IconPath;
+	public static sqlMiLogo: IconPath;
 
 	public static setExtensionContext(context: vscode.ExtensionContext) {
 		IconPathHelper.copy = {
@@ -68,5 +70,13 @@ export class IconPathHelper {
 			light: context.asAbsolutePath('images/cutover.svg'),
 			dark: context.asAbsolutePath('images/cutover.svg')
 		};
+		IconPathHelper.sqlMiLogo = {
+			light: context.asAbsolutePath('images/sqlMI.svg'),
+			dark: context.asAbsolutePath('images/sqlMI.svg')
+		};
+		IconPathHelper.sqlVmLogo = {
+			light: context.asAbsolutePath('images/sqlVM.svg'),
+			dark: context.asAbsolutePath('images/sqlVM.svg')
+		};
 	}
 }