feat: add internationalization for monitoring component

Co-authored-by: astandrik <[email protected]>

Author: Copilot

src/containers/Tenant/Diagnostics/Monitoring/Monitoring.tsx

@@ -1,5 +1,7 @@
 import {cn} from '../../../../utils/cn';
 
+import i18n from './i18n';
+
 import './Monitoring.scss';
 
 const b = cn('ydb-monitoring');
@@ -13,7 +15,7 @@ export function Monitoring({monitoringUrl}: MonitoringProps) {
     if (!monitoringUrl) {
         return (
             <div className={b('empty')}>
-                <div className={b('empty-text')}>Monitoring is not available</div>
+                <div className={b('empty-text')}>{i18n('message_not-available')}</div>
             </div>
         );
     }

src/containers/Tenant/Diagnostics/Monitoring/i18n/en.json

@@ -0,0 +1,3 @@
+{
+  "message_not-available": "Monitoring is not available"
+}

src/containers/Tenant/Diagnostics/Monitoring/i18n/index.ts

@@ -0,0 +1,7 @@
+import {registerKeysets} from '../../../../../utils/i18n';
+
+import en from './en.json';
+
+const COMPONENT = 'ydb-monitoring';
+
+export default registerKeysets(COMPONENT, {en});