feat(theming): add catppuccin, dracula, nord, tokyonight themes

internal/theming/assets/nord/zellij.kdl

@@ -0,0 +1,35 @@
+theme "nord"
+default_layout "default"
+default_mode "normal"
+pane_frames false
+simplified_ui true
+mouse_mode false
+
+keybinds {
+    shared {
+        bind "Alt h" { MoveFocusOrTab "Left"; }
+        bind "Alt l" { MoveFocusOrTab "Right"; }
+        bind "Alt j" { MoveFocus "Down"; }
+        bind "Alt k" { MoveFocus "Up"; }
+        bind "Alt n" { NewPane "Down"; }
+        bind "Alt v" { NewPane "Right"; }
+        bind "Alt f" { ToggleFloatingPanes; }
+        bind "Alt t" { NewTab; }
+    }
+}
+
+themes {
+    nord {
+        fg "#d8dee9"
+        bg "#2e3440"
+        black "#3b4252"
+        red "#bf616a"
+        green "#a3be8c"
+        yellow "#ebcb8b"
+        blue "#81a1c1"
+        magenta "#b48ead"
+        cyan "#88c0d0"
+        white "#e5e9f0"
+        orange "#d08770"
+    }
+}