[Orbit] Add PeriodicAction utility

[LINYV0719]

Description

This PR adds a new utility class PeriodicAction to orbit/actions.

Motivation: Currently, actions in Orbit are typically executed every time the Controller loop completes (steps_per_loop). Users often need to execute certain actions at a different, less frequent interval without changing the steps_per_loop setting which might affect preemption granularity

Changes:

• Added PeriodicAction class which wraps any callable Action
• It checks global_step % interval == 0 to decide whether to execute the wrapped action
• Added orbit/actions/periodic_action_test.py to verify the execution

actions/init Changes:

• Exported PeriodicAction in orbit/actions/__init__.py for easier access

Type of change

• [x] New feature

Tests

I added a new test suite orbit.actions.periodic_action_test to verify the logic.

Test Configuration:

• OS: Windows 11
• Python Version: 3.10
• Command: python -m orbit.actions.periodic_action_test
• Result: Passed (OK). Verified that the action is triggered exactly when global_step matches the interval.

Checklist

• [x] I have signed the Contributor License Agreement.
• [x] I have read guidelines for pull request.
• [x] My code follows the coding guidelines.
• [x] I have performed a self code review of my own code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.
• [x] I have added tests that prove my fix is effective or that my feature works.