feat: add nvim config

lua/config/keymaps.lua

@@ -0,0 +1,16 @@
+-- Configure custom keymaps.
+local keymap = vim.keymap.set
+local delkeymap = vim.keymap.del
+local opts = { noremap = true, silent = true }
+
+-- Improved line start/end
+keymap({ "n", "v" }, "H", "^", opts)
+keymap({ "n", "v" }, "L", "$", opts)
+
+-- Improved escape
+keymap("n", "<ESC>", "<ESC>:noh<CR>", opts)
+keymap("t", "<ESC><ESC>", "<C-\\><C-n>", opts)
+
+-- Disable alt j/k to move lines (conflict with default vim motions)
+delkeymap({ "i", "v" }, "<A-j>")
+delkeymap({ "i", "v" }, "<A-k>")