Add /estimates/ecommerce API support

[holtbp]

What

• Adds patch.estimates.create_ecommerce_estimate method

Why

New endpoint for our ecommerce customers!

SDK Release Checklist

• Have you added an integration test for the changes?
• Have you built the library locally and made queries against it successfully?
• Did you update the changelog?
• Did you bump the package version?
• If endpoints were removed, did you manually remove the corresponding files? (this should be rare)
• For breaking changes, did you plan for the release of the new SDK versions and deploy the API to production?

[holtbp]

🙈

[holtbp]

>>> import os
>>> import patch_api
>>> patch = patch_api.ApiClient(api_key=os.environ.get('SANDBOX_API_KEY'))
>>> distance_m = 1_000_000 # Pass in the distance traveled in meters
>>> transportation_method = "rail"
>>> package_mass_g = 5000
>>> estimate = patch.estimates.create_ecommerce_estimate(
...   distance_m=distance_m,
...   transportation_method=transportation_method,
...   package_mass_g=package_mass_g
... )
>>> print(estimate)
{'data': {'id': 'est_test_d43572a2c2e992dcbce24cb666c82a42',
          'mass_g': 69,
          'order': None,
          'production': False,
          'type': 'ecommerce'},
 'error': None,
 'success': True}