chore: move module/constants.nix to lib/default.nix

lib/colours/mac-os.nix

@@ -0,0 +1,37 @@
+rec {
+  black = {
+    bright = "#818383";
+    dark = "#000000";
+  };
+  red = {
+    bright = "#fc391f";
+    dark = "#c23621";
+  };
+  yellow = {
+    bright = "#eaec23";
+    dark = "#adad27";
+  };
+  green = {
+    bright = "#31e722";
+    dark = "#25bc24";
+  };
+  blue = {
+    bright = "#5833ff";
+    dark = "#492ee1";
+  };
+  magenta = {
+    bright = "#f935f8";
+    dark = "#d338d3";
+  };
+  cyan = {
+    bright = "#14f0f0";
+    dark = "#33bbc8";
+  };
+  white = {
+    bright = "#e9ebeb";
+    dark = "#cbcccd";
+  };
+  background = black.dark;
+  foreground = white.dark;
+  cursor = green.bright;
+}