chore: add MPL license headers to all source files (#2977)

src/app/users/users.component.html

@@ -1,3 +1,11 @@
+<!--
+  Copyright since 2025 Mifos Initiative
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-->
+
 <div class="container m-b-20 layout-row align-end gap-20px">
   <div #buttonCreateUser class="in-block">
     <button mat-raised-button color="primary" [routerLink]="['create']">