Add stock images, closes #2482

Closes #2482

Merge request studip/studip!1788

resources/vue/components/stock-images/colors.js

+import { $gettext } from '@/assets/javascripts/lib/gettext.js';
+
+const colors = [
+    { name: $gettext('Schwarz'), hex: '#000000' },
+    { name: $gettext('Grau'), hex: '#898f94' },
+    { name: $gettext('Weiß'), hex: '#ffffff' },
+    { name: $gettext('Gelb'), hex: '#ffbd33' },
+    { name: $gettext('Orange'), hex: '#f26e00' },
+    { name: $gettext('Braun'), hex: '#a85d45' },
+    { name: $gettext('Rot'), hex: '#d60000' },
+    { name: $gettext('Violett'), hex: '#af2d7b' },
+    { name: $gettext('Lila'), hex: '#682c8b' },
+    { name: $gettext('Blau'), hex: '#28497c' },
+    { name: $gettext('Petrol'), hex: '#129c94' },
+    { name: $gettext('Grün'), hex: '#008512' },
+];
+
+export { colors };