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

src/app/shared/server-selector/server-selector.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/.
+-->
+
 @if (existMoreThanOneServer) {
   <mat-form-field id="server-selector" [appearance]="appearance" [class.outlined-variant]="appearance === 'outline'">
     @if (showLabel) {

src/app/shared/server-selector/server-selector.component.scss

@@ -1,3 +1,10 @@
+/**
+ * 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/.
+ */
 // ===== Base Server Selector Styles =====
 #server-selector {
   &.mat-mdc-form-field {

src/app/shared/server-selector/server-selector.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/.
+ */
+
 /** Angular Imports */
 import { Component, OnInit, inject, Input } from '@angular/core';
 import { UntypedFormControl, ReactiveFormsModule } from '@angular/forms';