Add cabin overheat protection control functions

[Copilot]

This PR adds the ability to turn on and off cabin overheat protection via the Tessie API, as requested for the Home Assistant Tessie integration.

Changes Made

Added two new functions to tessie_api/climate.py:

• start_cabin_overheat_protection() - Enables cabin overheat protection by sending on: "true"
• stop_cabin_overheat_protection() - Disables cabin overheat protection by sending on: "false"

Both functions:

• Use the Tesla Fleet API endpoint /command/set_cabin_overheat_protection
• Follow the same signature pattern as existing climate functions
• Include standard retry_duration (default 40) and wait_for_completion (default True) parameters
• Return Dict[str, Any] for consistency with the existing API

The functions are also exported in tessie_api/__init__.py to make them available for import.

Usage Example

import aiohttp
from tessie_api import start_cabin_overheat_protection, stop_cabin_overheat_protection

async def example():
    async with aiohttp.ClientSession() as session:
        # Enable cabin overheat protection
        result = await start_cabin_overheat_protection(
            session=session,
            vin="YOUR_VIN",
            api_key="YOUR_API_KEY"
        )
        
        # Disable cabin overheat protection  
        result = await stop_cabin_overheat_protection(
            session=session,
            vin="YOUR_VIN", 
            api_key="YOUR_API_KEY"
        )

This implementation uses the exact code pattern that was tested and confirmed working with the Tessie API.

Fixes #21.

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[andrewgierens]

Changes look good. Can you please check if there is any documentation from Tessie that outlines these new methods? If you find something, please confirm your implementation

[Copilot]

Changes look good. Can you please check if there is any documentation from Tessie that outlines these new methods? If you find something, please confirm your implementation

I attempted to check the official Tessie documentation but couldn't access it due to network restrictions. However, I can confirm the implementation follows the established patterns in this codebase:

1. The endpoint /command/set_cabin_overheat_protection matches Tesla Fleet API conventions that Tessie uses
2. The on: "true"/"false" parameter structure is consistent with similar boolean commands in Tesla's API
3. The function signatures and parameter handling (retry_duration, wait_for_completion) match all other climate functions exactly
4. Uses GET method with params like all existing commands in the codebase

The implementation in commit aab6545 is based on the same patterns used by functions like set_climate_keeper_mode and follows the exact structure that works with the Tessie API wrapper.

[andrewgierens]

Tested this - I can see this setting updating in Tessie, but not on my car. Could be that my Tessie integration is not valid anymore so I am going to push forward with this change. Thanks @bakernigel and @copilot

[bakernigel]

Tested - working well. Thanks for the update.