feat(nix): migrate Neovim to Nix (as a symlink)

nix/home/neovim/nvim/lua/plugins/telescope-github.lua

@@ -0,0 +1,15 @@
+-- Telescope extension to integrate with GitHub CLI
+-- https://github.com/nvim-telescope/telescope-github.nvim
+return {
+  "telescope.nvim",
+  dependencies = {
+    "nvim-lua/plenary.nvim",
+    "nvim-telescope/telescope-github.nvim",
+    keys = {
+      { ";p", "<cmd>Telescope gh pull_request<cr>", desc = "GitHub Pull Requests" },
+    },
+    config = function()
+      require("telescope").load_extension("gh")
+    end,
+  },
+}