nvim: move luasnip dep to lsp declaration

.config/nvim/lua/lsp.lua

@@ -3,6 +3,7 @@ require('keymaps')
 
 use {
     'https://github.com/neovim/nvim-lspconfig',
+    requires = 'https://github.com/L3MON4D3/LuaSnip',
     config = function()
         map('n', '<space>e', vim.diagnostic.open_float)
         map('n', '<f5>', vim.diagnostic.goto_prev)

.config/nvim/lua/plugins.lua

@@ -11,16 +11,15 @@ use = packer.use
 
 use 'https://github.com/wbthomason/packer.nvim'
 
--- common dependencies
+-- common dependencies which require setup
 use {
     'https://github.com/nvim-treesitter/nvim-treesitter',
     run = function()
         require('nvim-treesitter.install').update({ with_sync = true })
     end
 }
-use 'https://github.com/L3MON4D3/LuaSnip'
 
--- compile and install new plugins when this  is save in this dir are written
+-- compile and install new plugins when lua files in this dir are written
 vim.cmd([[
     augroup packer_user_config
         autocmd!