fix(autocmd): skip non-normal buftype for performance

[phanen]

I notice :terminal becuase obviously slow after eebda20

Not sure why M.invalidate_reference_targets_for_file_change() is slow, but I think no problem to skip special buffer here.

before/after `:terminal`

[sudo-tee]

@phanen thanks for the fix.

How did you get that nice flamechart from your nvim config ?

[phanen]

M.profile = function(out)
  out = out or '/tmp/tmp/profile.log'
  fn.mkdir(fs.dirname(out), 'p')
  if not _G.jit_profile then
    -- G option for https://github.com/jonhoo/inferno
    require('jit.p').start('10,i1,s,m0,G', out)
    print('profile started')
  else
    require('jit.p').stop()
    fn.system(('inferno-flamegraph %s > %s'):format(out, fs.joinpath(fs.dirname(out), 'profile.svg')))
    vim.system({ vim.env.BROWSER, '/tmp/tmp/profile.svg' })
    print('profile stoped')
  end
  _G.jit_profile = not _G.jit_profile
end