Add keyboard layout and variant settings with gum

.install/templates/keyboard.conf

@@ -0,0 +1,12 @@
+# ----------------------------------------------------- 
+# Keyboard Layout
+# -----------------------------------------------------
+input {
+    kb_layout = "KEYBOARD_LAYOUT"
+    kb_variant = "KEYBOARD_VARIANT"
+    follow_mouse = 1
+    touchpad {
+        natural_scroll = false
+    }
+    sensitivity = 0 # -1.0 - 1.0, 0 means no modification.
+}

.install/templates/keyboard.py

@@ -0,0 +1,3 @@
+# Setup global keyboard layout here
+
+keyboard_layout = "KEYBOARD_LAYOUT"