Add Tracking token

[etherealmuse]

🔗 Linked issue

Description

There is no Authorization token due to which API calls to protected tracking server behind would fail. Therefore, adding MLFLOW_TRACKING_TOKEN that gets set from environment variable.

Added if statement for the variable so you can choose to use without Authorization token if any cases.

    // Add MLflow tracking token if it exists
    if (process.env.MLFLOW_TRACKING_TOKEN) {
        fetchOptions.headers['Authorization'] = `Bearer ${process.env.MLFLOW_TRACKING_TOKEN}`;
    }

Checklist

• [x ] I've followed the Contributing guidelines

• [ x] I've titled my PR according to the Conventional Commits spec

• [x ] I've linked an open issue

• I've added tests that fail without this PR but pass with it

• I've linted and tested my code

• [x ] I've updated documentation (if appropriate)