Replace nvim-lsp-installer with mason

lua/plugins/barbar_nvimtree.lua

@@ -1,10 +1,10 @@
 local nvim_tree_events = require("nvim-tree.events")
 local bufferline_state = require("bufferline.state")
 
-nvim_tree_events.on_tree_open(function ()
+nvim_tree_events.on_tree_open(function()
     bufferline_state.set_offset(31, "File Tree")
 end)
 
-nvim_tree_events.on_tree_close(function ()
+nvim_tree_events.on_tree_close(function()
     bufferline_state.set_offset(0)
 end)

lua/plugins/config/lspsetup.lua

@@ -1,11 +1,10 @@
-require("nvim-lsp-setup").setup {
+require("lsp-setup").setup {
     servers = {
         sumneko_lua = {},
         tsserver = {},
         gopls = {},
         cssls = {},
         jsonls = {},
-        html = {},
-        volar = {}
+        html = {}
     }
 }

lua/plugins/setup.lua

@@ -122,7 +122,8 @@ require("packer").startup(function(use)
         "junnplus/nvim-lsp-setup",
         requires = {
             "neovim/nvim-lspconfig",
-            "williamboman/nvim-lsp-installer"
+            "williamboman/mason.nvim",
+            "williamboman/mason-lspconfig.nvim"
         },
         config = function()
             require("plugins.config.lspsetup")