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.

official/save_selection.lua

@@ -38,9 +38,9 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("7.0.0", "save_selection") 
 
-local gettext = dt.gettext.gettext 
+local gettext = dt.gettext.gettext
 
-gettext.bindtextdomain("save_selection", dt.configuration.config_dir .."/lua/locale/")
+dt.gettext.bindtextdomain("save_selection", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msg)
   return gettext(msg)
@@ -50,6 +50,13 @@ end
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "save_selection",
+  purpose = _("shortcuts providing multiple selection buffers"),
+  author = "Jérémy Rosen",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/save_selection"
+}
+
 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
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again