feat: add elixir lsps

modules/programs/nvim/new_plugins/lsp.nix

@@ -16,6 +16,7 @@ in
       elixir.setup {
         nextls = {
           enable = true,
+          cmd = vim.fn.exepath("nextls"),
         },
         elixirls = {
           enable = true,
@@ -42,6 +43,7 @@ in
         installCargo = false;
         settings.files.watcher = "server";
       };
+      servers.lexical.enable = true;
       servers.lua_ls.enable = true;
       servers.nil_ls.enable = true;
       servers.nixd.enable = true;