Add section for Debugging in VSCode

Added a section to show how developers can debug the code using VSCode Go tools.
This will help devs to debug faster and more efficiently while stepping through the code.

Signed off by: Rishikesh Nair <[email protected]>

CONTRIBUTING.md

@@ -74,6 +74,33 @@ After the correct controller-gen version is installed.  All future builds will w
 
 After running this command, CLI will be available in `bin/kubectl-kuttl` and you can invoke the command for example like this `bin/kubectl-kuttl version` (no need to install it as `kubectl` plugin).
 
+### Debugging in VSCode
+
+Click Run > Add Configuration... to open the `launch.json` file. Add below configuration objects to specify the necessary sample tests and assertions in the `args[]`.
+
+```json
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "KUTTL Debug",
+      "type": "go",
+      "request": "launch",
+      "mode": "debug",
+      "program": "${workspaceFolder}/cmd/kubectl-kuttl/main.go",
+      "args": [
+        "test", 
+        "sample", 
+        "--config=${workspaceFolder}/cmd/kubectl-kuttl/<sample_tests_dir_to_run_with_kuttl>"
+      ]
+    }
+  ]
+}
+```
+
 ### Testing
 
 Use `make all` to run all available tests.