feat(service): Adds HomeAssistant service

[iamajoe]

Description

#460 - Implements HomeAssistant service

Motivation and Context

The service will provide a way to interact with the automation system of HomeAssistant.

How Has This Been Tested?

Automated tests and through local home assistant webhooks.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [x] Documentation (no code change)
• [ ] Refactor (refactoring production code)
• [ ] Other

Checklist:

• [x] My code follows the code style of this project.
• [x] I have updated the documentation accordingly.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.