Issue Title: Implement 'DEV BuiltIn Command' for Local ML-Agents Installation

Description

The Dialogos project requires a new built-in command within Unity to streamline the local installation of ML-Agents. This command should invoke our run.py script, which is responsible for setting up ML-Agents in the development environment.

Requirements:

• Command Name: DEV BuiltIn Command
• Functionality: The command should execute the run.py script from within Unity's context.
• Outcome: Successful execution of the script will install ML-Agents locally without manual intervention.
• Integration: The new command will be integrated into the .unityboot file, which is auto-generated during the Unity boot process.

Acceptance Criteria:

1. The DEV BuiltIn Command is accessible within Unity's command palette.
2. Running the command executes the run.py script successfully.
3. ML-Agents is installed locally, and the environment is ready for ML development.
4. The .unityboot file invokes the DEV BuiltIn Command as part of its initialization sequence.

Additional Context:

This feature is intended to simplify the setup process for developers working on the Dialogos project under the NaXzyu GitHub organization. By automating the installation of ML-Agents, we aim to reduce setup time and potential configuration errors.