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

src/app/system/manage-external-events/manage-external-events.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">
   <div #filter class="layout-row">
     <mat-form-field class="flex-fill">

src/app/system/manage-external-events/manage-external-events.component.scss

@@ -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/.
+ */
+
 .container {
   .action-button {
     margin-left: auto;

src/app/system/manage-external-events/manage-external-events.component.ts

@@ -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/.
+ */
+
 import { Component, OnInit, ViewChild, inject } from '@angular/core';
 import { MatPaginator } from '@angular/material/paginator';
 import { MatSort, MatSortHeader } from '@angular/material/sort';

src/app/system/manage-external-events/manage-external-events.resolver.ts

@@ -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/.
+ */
+
 import { Injectable, inject } from '@angular/core';
 import { Router, RouterStateSnapshot, ActivatedRouteSnapshot } from '@angular/router';
 import { Observable, of } from 'rxjs';