Initial neovim config

Lazy.nvim plugin manager, LSP (rust-analyzer, clangd, ts_ls, zls),
treesitter, telescope, bufferline, neo-tree, gitsigns, lazygit,
alabaster theme, persistence sessions, nvim-cmp, lualine, which-key.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lua/plugins/session.lua

@@ -0,0 +1,10 @@
+return {
+  "folke/persistence.nvim",
+  event = "BufReadPre",
+  opts = {},
+  keys = {
+    { "<leader>qs", function() require("persistence").load() end, desc = "Restore session" },
+    { "<leader>ql", function() require("persistence").load({ last = true }) end, desc = "Restore last session" },
+    { "<leader>qd", function() require("persistence").stop() end, desc = "Stop session saving" },
+  },
+}