feat: AE-835 Add class based execution [Runtime]

[pandyamarut]

Summary

This PR introduces a modular class-based execution that extends the existing function execution capabilities. The core change allows remote execution of class methods with persistent instance management across multiple calls.

Key Methods:

execute_class_method(): Main orchestrator that handles class method execution.

_get_or_create_instance(): Instance lifecycle either reuses existing class instances or creates new ones based on request parameters.

cleanup_instances(): removes stale instances based on configurable timeouts.

[deanq]

Add a new file, test_input_class.json

{
  "input": {
    "execution_type": "class",
    "class_name": "TestClass",
    "class_code": "class TestClass:\n    def __init__(self, value):\n        self.value = value\n    \n    def get_value(self):\n        return f'Value is: {self.value}' ",
    "method_name": "get_value",
    "constructor_args": [
      "gAWVCQAAAAAAAACMBWhlbGxvlC4="
    ],
    "constructor_kwargs": {},
    "args": [],
    "kwargs": {},
    "create_new_instance": true
  }
}

...that way we can test functionality with a class payload

[deanq]

Check again. Logger.de() would error. Don't rush your commits.

[deanq]

Since we're introducing more complexity with the class-based execution, let's have unit test coverage on this. Under tests, there's integration and unit.