[feat] nvim: add custom vim plugin management

Use vimPluginsUpdater to keep extra plugins up to date

Fixes #4

nvim/extraPlugins/generated.nix

@@ -0,0 +1,35 @@
+# GENERATED by ./pkgs/applications/editors/vim/plugins/update.py. Do not edit!
+{
+  lib,
+  buildVimPlugin,
+  buildNeovimPlugin,
+  fetchFromGitHub,
+  fetchgit,
+}:
+
+final: prev: {
+  nvim-silicon = buildVimPlugin {
+    pname = "nvim-silicon";
+    version = "2024-07-30";
+    src = fetchFromGitHub {
+      owner = "michaelrommel";
+      repo = "nvim-silicon";
+      rev = "feb882f04c992b797daa118101a239fb3bedfc04";
+      sha256 = "03dy4q2dbgiyydi9wvpij6s2aggdpr3lgd9cqqv0i2m1m0qb9gad";
+    };
+    meta.homepage = "https://github.com/michaelrommel/nvim-silicon/";
+  };
+
+  vim-jjdescription = buildVimPlugin {
+    pname = "vim-jjdescription";
+    version = "2024-05-28";
+    src = fetchFromGitHub {
+      owner = "avm99963";
+      repo = "vim-jjdescription";
+      rev = "ca14325202f3cd894d01ba833451017624249222";
+      sha256 = "1y83fdih991ivlvgcwp0sx97icmf9k6px7mr26vb77izjlf011w2";
+    };
+    meta.homepage = "https://github.com/avm99963/vim-jjdescription/";
+  };
+
+}