Setup Fails Without Registry TLS Skip and Proper Start Sequence

The current setup instructions for running the plugin with a 'local registry' (registry.dev:5000) using Kind fail and are missing some crucial configuration steps that result in image pull errors (ErrImagePull) unless manually patched.

### Working Local Setup (Tested)

To successfully run the plugin using Kind and load images into a local registry (registry.dev:5000), I had to:

Create kind-config.yaml with containerdConfigPatches:

Without the "insecure_skip_verify = true" line, the image pull fails for local setup.

Then I had to start the registry before loading the image in [run.sh](https://github.com/cloudnative-pg/cnpg-i-hello-world/blob/main/scripts/run.sh):

This must run before the `load_image_registry` function.

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With these changes, the plugin pod hello-world runs correctly and emits expected logs, confirming it's functional (i added custom logs for testing):

Review the setup instructions, kind-config.yaml, and scripts/run.sh; start by reproducing the Kind local-registry setup with the registry and containerd TLS configuration described in the issue. Done means the image loads without ErrImagePull, the hello-world plugin pod runs, and it emits the expected logs.

Written by the indexing model from the issue text.