Add sway config and other Wayland-related stuff

.config/sway/config.d/20_input

@@ -0,0 +1,19 @@
+# Configure input devices.
+# (These should be sensible defaults for our devices; replace file with local file if needed.)
+
+# Set keyboard layout
+input type:keyboard {
+    xkb_layout "us"
+    xkb_variant "altgr-intl"
+
+    # Replace caps lock key with return, use menu key for compose
+    xkb_options "caps:return,compose:menu"
+}
+
+# Configure touchpad
+input type:touchpad {
+    tap enabled
+    drag_lock disabled
+
+    scroll_factor 0.5
+}