Add missing 'OR' keyword to filter dialog

Signed-off-by: trivernis <trivernis@protonmail.com>

mediarepo-ui/src/app/components/shared/sidebar/file-search/filter-dialog/filter-expression-list-item/filter-expression-list-item.component.html

@@ -3,6 +3,7 @@
         <mat-list-item *ngFor="let entry of this.orExpression"
                        [class.selected]="componentSelectable.selected"
                        class="or-filter-list-item">
+            <span *ngIf="entry[0] > 0" class="or-combinator">OR&nbsp;</span>
             <app-selectable #componentSelectable
                             (appSelect)="this.entrySelect.emit(entry)"
                             (appUnselect)="this.entryUnselect.emit(entry)">

mediarepo-ui/src/app/components/shared/sidebar/file-search/filter-dialog/filter-expression-list-item/filter-expression-list-item.component.scss

@@ -29,3 +29,7 @@ app-selectable {
     width: 100%;
     height: 100%;
 }
+
+.or-combinator {
+    color: #7dff70;
+}