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/colorscheme.lua

@@ -0,0 +1,8 @@
+return {
+  "p00f/alabaster.nvim",
+  priority = 1000,
+  config = function()
+    vim.o.background = "light"
+    vim.cmd.colorscheme("alabaster")
+  end,
+}