more nvim-dap configuration

config/plugins.nix

@@ -103,6 +103,7 @@
 
     chadtree = {
       enable = true;
+      keymap.openFileFolder.collapse = [ "l" ];
     };
 
     fzf-lua = {
@@ -139,11 +140,17 @@
     dap = {
       enable = true;
       adapters = {
-        executables = { };
+        executables = {
+          on_config = { };
+        };
         servers = { };
       };
     };
 
+    dap-ui = {
+      enable = true;
+    };
+
     dap-python = {
       enable = true;
     };