migrate from packer to lazy

after/plugin/lsp.lua

@@ -1,11 +1,15 @@
--- language server manager (via Mason)
-local lsp = require('lsp-zero').preset({})
+local lsp_zero = require('lsp-zero')
 
-lsp.on_attach(function(client, bufnr)
-  lsp.default_keymaps({buffer = bufnr})
+lsp_zero.on_attach(function(client, bufnr)
+    -- see :help lsp-zero-keybindings
+    -- to learn the available actions
+    lsp_zero.default_keymaps({buffer = bufnr})
 end)
 
--- (Optional) Configure lua language server for neovim
-require('lspconfig').lua_ls.setup(lsp.nvim_lua_ls())
-
-lsp.setup()
+require('mason').setup({})
+require('mason-lspconfig').setup({
+    ensure_installed = {},
+    handlers = {
+        lsp_zero.default_setup,
+    },
+})