Make lua scripts executable

src/freedombone-app-xmpp

             cp ~/freedombone/image_build/mod_omemo_all_access.lua /var/lib/prosody/prosody-modules/mod_omemo_all_access.lua
             cp ~/freedombone/image_build/mod_omemo_all_access.lua /usr/lib/prosody/modules/mod_omemo_all_access.lua
 
+            chmod +x /var/lib/prosody/prosody-modules/mod_omemo_all_access.lua
+            chmod +x /usr/lib/prosody/modules/mod_omemo_all_access.lua
+
             if ! grep -q "omemo_all_access" /etc/prosody/prosody.cfg.lua; then
                 sed -i '/"pep";/a "omemo_all_access"; -- Fix for PEP with OMEMO' /etc/prosody/prosody.cfg.lua
                 sed -i 's|"omemo_all_access";|  "omemo_all_access";|g' /etc/prosody/prosody.cfg.lua