Update to (somewhat?) dendritic pattern

Heavily inspired by https://github.com/Doc-Steve/dendritic-design-with-flake-parts.

> Atomic commits? Never heard of them!

modules/programs/nixvim/_nixvim-config/plugins/default.nix

@@ -0,0 +1,24 @@
+{ ... }: {
+  imports = [
+    ./lsp.nix
+    ./telescope
+    ./cmp
+  ];
+
+  plugins = {
+    lualine.enable = true;
+
+    web-devicons.enable = true;
+
+    treesitter = {
+      enable = true;
+      autoLoad = true;
+    };
+
+    gitsigns.enable = true;
+
+    which-key.enable = true;
+
+    glow.enable = true;
+  };
+}