Added metadata fields to scripts that script_manager can access and

display as a tooltip.

Added script_manager integration to those scripts that didn't have it.

contrib/hugin.lua

@@ -56,21 +56,28 @@ local PQ = dt.configuration.running_os == "windows" and '"' or "'"
 -- works with darktable API version from 5.0.0 on
 du.check_min_api_version("7.0.0", "hugin") 
 
+dt.gettext.bindtextdomain("hugin", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "hugin",
+  purpose = _("stitch images into a panorama"),
+  author = "Wolfgang Goetz",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/hugin"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
-gettext.bindtextdomain("hugin", dt.configuration.config_dir .."/lua/locale/")
-
-local function _(msgid)
-  return gettext(msgid)
-end
-
 local function user_preference_changed(widget)
   user_prefer_gui = widget.value
   dt.preferences.write(namespace, user_pref_str, "bool", user_prefer_gui)