i18n for publication search page.

frontend/src/app/pages/search-publications/search-publications.component.html

@@ -1,13 +1,13 @@
-<h1>Search results</h1>
+<h1 i18n>Search results</h1>
 @if((isLoading$ | async) === true) {
-    <h2>Search in progress...</h2>
+    <h2 i18n>Search in progress...</h2>
     <mat-spinner></mat-spinner>
 } @else if((isLoaded$ | async) === true) {
     @if((publications$ | async)?.length) {
         <app-publication-list [publications$]="publications$"></app-publication-list>
     } @else {
-        No any result.
+        <span i18n>No any result.</span>
     }
 } @else {
-    No any result.
+    <span i18n>No any result.</span>
 }