[nvim] Move neovim config to /nvim

nvim/lua/treesitter.lua

@@ -0,0 +1,16 @@
+-- Treesitter configuration
+-- Eryn Wells <eryn@erynwells.me>
+
+local treesitter = require 'nvim-treesitter.configs'
+
+-- For some reason the Lua linter complains about missing fields here even
+-- though they're not requried. So, ignore the error.
+---@diagnostic disable:missing-fields
+treesitter.setup {
+    highlight = { enable = true },
+    indent = { enable = true },
+    ensure_installed = { "c", "cpp", "javascript", "lua", "objc", "python", "rust", "vim" },
+    auto_install = true,
+}
+
+vim.treesitter.language.register("objcpp", { "objc", "cpp" })