Initial attempt to implement macOS bindings

macOS.yaml

@@ -0,0 +1,36 @@
+---
+modmap:
+  - name: non-terminal modmap
+    application:
+      not:
+        - kitty
+        - gnome-terminal-server
+    remap:
+      LeftAlt: LeftCtrl
+      LeftCtrl: LeftAlt
+
+keymap:
+  - name: terminal remaps
+    application:
+      only:
+        - kitty
+        - gnome-terminal-server
+    remap:
+      Alt-C: Ctrl-Shift-C
+      Alt-V: Ctrl-Shift-V
+
+  - name: non-terminal remaps
+    application:
+      not:
+        - kitty
+        - gnome-terminal-server
+    remap:
+      # TODO: This is the main flaw of swapping Ctrl and Alt as it makes
+      # switching windows inconsistent and buggy.
+      Ctrl-Tab: Alt-Tab
+
+      Ctrl-Shift-LeftBrace: Ctrl-PageUp
+      Ctrl-Shift-RightBrace: Ctrl-PageDown
+
+      Ctrl-Alt-Shift-LeftBrace: Ctrl-Shift-PageUp
+      Ctrl-Alt-Shift-RightBrace: Ctrl-Shift-PageDown