Refactor nvim structure

.config/nvim/init.lua

@@ -1 +1,4 @@
-require("user")
+require("set")
+require("remap")
+
+require("plugins")

.config/nvim/lua/plugins.lua

@@ -1,7 +1,7 @@
 -- This file can be loaded by calling `lua require('plugins')` from your init.vim
 
 -- Only required if you have packer configured as `opt`
-vim.cmd.packadd('packer.nvim')
+vim.cmd [[packadd packer.nvim]]
 
 return require('packer').startup(function(use)
 	-- Packer can manage itself

.config/nvim/lua/user/init.lua

@@ -1,4 +0,0 @@
-require("user.packer")
-
-require("user.set")
-require("user.remap")