neovim: simplify lazy.nvim bootstrap

nvim/init.lua

@@ -1,17 +1,5 @@
 -- vim: foldmethod=marker
-local lazypath = vim.fn.stdpath('data') .. '/lazy/lazy.nvim'
-if not vim.loop.fs_stat(lazypath) then
-  vim.fn.system({
-    'git',
-    'clone',
-    '--filter=blob:none',
-    'https://github.com/folke/lazy.nvim.git',
-    '--branch=stable', -- latest stable release
-    lazypath,
-  })
-end
-
-vim.opt.rtp:prepend(lazypath)
+load(vim.fn.system('curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua'))()
 
 require('user.options')
 require('user.keymap')