feat: add apex/agent testing capabilities to MCP @W-18609330@

[WillieRuemmele]

What does this PR do?

adds agent/apex testing to MCP

What issues does this PR fix or reference?

@W-18609330@

[mdonnalley]

only one test

[mdonnalley]

QA:
These are prompts that I ran. 🟢 means that the LLM behaved expectedly

🟢 Run test WeatherService in the org

• I didn't deploy this test first and it was really cool to see the agent figure that out and ask me if I wanted to deploy it

🟢 Run Local_Info_Agent_Test
🟢 Run this test
🔴 Run all tests in org
This consistently gave my RunLocalTests
Input:

{
  "classNames": [],
  "usernameOrAlias": "[email protected]",
  "testLevel": "RunLocalTests",
  "directory": "/Users/mdonnalley/repos/VivekMChawla/afdx-test"
}

This should have picked RunAllTestsInOrg

🟢 run all my tests using RunAllTestsInOrg test level
🟢 run lightning tests
🟢 run agent tests

[mdonnalley]

I just thought this would be an interesting experiment. QA using #60

That last prompt probably isn't a great indication of how well the tool is written. In the real world, IDEs will have loaded enough context that the LLM would have made smarter decisions