[gnome-builder] greeter-shortcuts: Add alt-left shortcut to greeter

[Christian Hergert <chergert src gnome org>]

commit aa29ea16d19e6ebc878036337f119e7d15626a01
Author: Adwait Rawat <adwait rawat gmail com>
Date:   Thu Mar 5 04:11:29 2020 +0900

    greeter-shortcuts: Add alt-left shortcut to greeter

 src/libide/greeter/ide-greeter-workspace-shortcuts.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/libide/greeter/ide-greeter-workspace-shortcuts.c 
b/src/libide/greeter/ide-greeter-workspace-shortcuts.c
index 18a1a9472..96a431e12 100644
--- a/src/libide/greeter/ide-greeter-workspace-shortcuts.c
+++ b/src/libide/greeter/ide-greeter-workspace-shortcuts.c
@@ -41,4 +41,10 @@ _ide_greeter_workspace_init_shortcuts (IdeGreeterWorkspace *self)
                                               "<Primary>w",
                                               DZL_SHORTCUT_PHASE_DISPATCH,
                                               I_("win.close"));
+
+  dzl_shortcut_controller_add_command_action (controller,
+                                              I_("org.gnome.builder.greeter.back-button"),
+                                              "<alt>Left",
+                                              DZL_SHORTCUT_PHASE_DISPATCH,
+                                              I_("win.surface('sections')"));
 }