📄 Added license-note to every file

frontend/src/lib/editor/card.svelte

@@ -1,3 +1,8 @@
+<!--
+  - 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 https://mozilla.org/MPL/2.0/.
+  -->
 <script lang="ts">
 	import type { EditorData, Answer } from '$lib/quiz_types';
 	import { reach } from 'yup';

frontend/src/lib/editor/checker-bg.svg

@@ -1,3 +1,9 @@
+<!--
+  - 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 https://mozilla.org/MPL/2.0/.
+  -->
+
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 8 8" width="16" height="16">
     <path fill="#d0d0d0" fill-rule="evenodd" d="M0 0h4v4H0V0zm4 4h4v4H4V4z"/>
 </svg>

frontend/src/lib/editor/settings-card.svelte

@@ -1,3 +1,8 @@
+<!--
+  - 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 https://mozilla.org/MPL/2.0/.
+  -->
 <script lang="ts">
 	import type { EditorData } from '$lib/quiz_types';
 

frontend/src/lib/editor/sidebar.svelte

@@ -1,3 +1,8 @@
+<!--
+  - 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 https://mozilla.org/MPL/2.0/.
+  -->
 <script lang="ts">
 	import type { EditorData, Question } from '../quiz_types';
 	import { reach } from 'yup';

frontend/src/lib/editor/uploader.svelte

@@ -1,3 +1,8 @@
+<!--
+  - 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 https://mozilla.org/MPL/2.0/.
+  -->
 <script lang="ts">
 	import { Dashboard as SvelteDashboard } from '@uppy/svelte';
 	import Uppy from '@uppy/core';