Simplify Vue LSP config

[azdanov]

Is your feature related to a problem?

Simpler setup and less for us to maintain.

Describe the new feature

At the moment we have

astrocommunity/lua/astrocommunity/pack/vue/init.lua

Line 21 in d451f1d

on_init = function(client)

this manual setup copied from https://github.com/vuejs/language-tools/wiki/Neovim

It's similar to what's offered upstream in lspconfig: https://github.com/neovim/nvim-lspconfig/blob/f47cd681d7cb6048876a2e908b6d8ba1e530d152/lsp/vue_ls.lua#L25

I think it's possible to remove what we have and rely on their config.

Additional context

Need to make sure that the lspconfig version shipped with astronvim has the mentioned config.