feat(toggleterm): add toggleterm

I use a terminal a lot while editing, and the less time I spend leaving
my editor the better, especially when it's for something quick

lua/plugins/spec/toggleterm.lua

@@ -0,0 +1,18 @@
+---@module "lazy.nvim"
+---@type LazySpec[]
+return {
+	{
+		"akinsho/toggleterm.nvim",
+		version = "*",
+		---@module "toggleterm.config"
+		---@type ToggleTermConfig
+		---@diagnostic disable-next-line: missing-fields
+		opts = {
+			open_mapping = "<leader>t",
+			direction = "float",
+		},
+		keys = {
+			{ "<leader>t",desc = "toggle terminal" }
+		}
+	}
+}