Update structure; add .lua-format; add terminal support

lua/tokyo/init.lua

@@ -1,22 +1,14 @@
 local M = {}
-local hl = require('tokyo.theme')
-
-local highlight = vim.api.nvim_set_hl
-local set_hl_ns = vim.api.nvim__set_hl_ns or vim.api.nvim_set_hl_ns
-local create_namespace = vim.api.nvim_create_namespace
+local highlights = require('tokyo.highlights')
+local terminal = require('tokyo.terminal')
 
 local function colorscheme()
     vim.cmd("hi clear")
     if vim.fn.exists("syntax_on") then vim.cmd("syntax reset") end
     vim.o.background = "dark"
     vim.o.termguicolors = true
-    local ns = create_namespace("tokyo")
-    for _, group in pairs(hl) do
-        for group_name, group_settings in pairs(group) do
-            highlight(ns, group_name, group_settings)
-        end
-    end
-    set_hl_ns(ns)
+    highlights.setup()
+    terminal.setup()
 end
 
 function M.setup() colorscheme() end