feat: download and apply meshviewer release automatically

Author: FFHener

roles/ff_util/tasks/main.yml

@@ -10,8 +10,11 @@
     - /opt/meshviewer
     - /var/www/hopglass.berlin.freifunk.net/www/
 
-# Download latest meshviewer release from https://github.com/freifunk/meshviewer/releases
-# and unpack to /var/www/hopglass.berlin.freifunk.net/www/
+- name: Greb Meshviewers latest release
+  unarchive:
+    src: "https://github.com/freifunk/meshviewer/releases/download/v{{ meshviewer_version }}//meshviewer-build.zip"
+    dest: /var/www/hopglass.berlin.freifunk.net/www
+    remote_src: true
 
 - name: Copy owm2meshviewer script
   ansible.builtin.copy: