support handy interactions to validate service responses properly

## Feature

support handy interactions to validate service serves as expected, and avoid typing the kubectl command to request the service repeatedly and manually.

## Design

users can:
- check if the service responds accordingly with a few provided customary ways(curl, print, forward-port and open in browser), with one click
- validate service repeatedly without setting up the validation approaches and parameters.
- the validation routines can be shared as configurations with coworkers.

No files, tests, or entry points are named, so begin by locating the VS Code extension code that invokes kubectl and handles service interactions. Define the prototype scope around curl, printing, port forwarding, browser opening, repeated validation, and sharing configurations; done requires an agreed design and working prototype.

Written by the indexing model from the issue text.