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

lib/colours/antares.nix

@@ -0,0 +1,37 @@
+rec {
+  black = {
+    bright = "#151515";
+    dark = "#000000";
+  };
+  red = {
+    bright = "#de575c";
+    dark = "#de575c";
+  };
+  yellow = {
+    bright = "#ebe971";
+    dark = "#ebe971";
+  };
+  green = {
+    bright = "#00b853";
+    dark = "#00b853";
+  };
+  blue = {
+    bright = "#90d0f0";
+    dark = "#7fc6f0";
+  };
+  magenta = {
+    bright = "#cf9ffa";
+    dark = "#cf9ffa";
+  };
+  cyan = {
+    bright = "#4ae5e8";
+    dark = "#4ae5e8";
+  };
+  white = {
+    bright = "#ffffff";
+    dark = "#bbbbbb";
+  };
+  background = black.dark;
+  foreground = white.dark;
+  cursor = green.bright;
+}