[polari] app: Expose --debugger option in --help

[Florian Müllner <fmuellner src gnome org>]

commit a86372a5d4d95753a054d51e9c77b98834af0ff6
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Jul 13 00:27:14 2018 +0200

    app: Expose --debugger option in --help
    
    The actual option handling needs to happen before handling control
    over to JS, but we still want the option to show up in --help output,
    so include it in the "regular" option handling as well.
    
    https://gitlab.gnome.org/GNOME/polari/merge_requests/49

 src/application.js | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/application.js b/src/application.js
index 5564fea..62806d7 100644
--- a/src/application.js
+++ b/src/application.js
@@ -45,6 +45,11 @@ var Application = GObject.registerClass({
         this.add_main_option('start-client', 0,
                              GLib.OptionFlags.NONE, GLib.OptionArg.NONE,
                              _("Start Telepathy client"), null);
+        // Only included for --help output, the actual option is handled
+        // from C before handling over control to JS
+        this.add_main_option('debugger', 'd',
+                             GLib.OptionFlags.NONE, GLib.OptionArg.NONE,
+                             _("Start in debug mode"), null);
         this.add_main_option('test-instance', 0,
                              GLib.OptionFlags.NONE, GLib.OptionArg.NONE,
                              _("Allow running alongside another instance"), null);