fix: replace deprecated neodev with lazydev

neovim/default.nix

@@ -84,7 +84,7 @@
         nvim-lspconfig
         lsp-status-nvim
         rustaceanvim
-        neodev-nvim
+        lazydev-nvim
         none-ls-nvim
         lsp_lines-nvim
         lsp-inlayhints-nvim

neovim/lspconfig.lua

@@ -52,15 +52,7 @@ lsp_status.config({
 })
 lsp_status.register_progress()
 
--- setup lua language server for init.nvim and nvim plugin development
-require("neodev").setup({
-  override = function(root_dir, options)
-    if require("neodev.util").has_file(root_dir, "/etc/nixos") then
-      options.enabled = true
-      options.plugins = true
-    end
-  end,
-})
+require('lazydev').setup()
 
 local capabilities = require("cmp_nvim_lsp").default_capabilities(lsp_status.capabilities)