Add Golden Records project with update and publish functions.

[skalish]

Creation cannot be added because of the lack of a versioned API.

↪️ Pull Request

This PR adds functions for updating and publishing a Tamr Golden Records project, a gap in functionality noted in #460. Golden Record project creation cannot be added because of the lack of a versioned API.

💻 Examples

import tamr_client as tc

s = tc.Session(...)
gr_project = tc.GoldenRecordsProject(...)

# Run jobs
tc.golden_records.update(s, gr_project)
tc.golden_records.publish(s, gr_project)

✔️ PR Todo

• [x] Added/updated testing for this change
• [x] Included links to related issues/PRs
• [x] Update relevant docs + docstrings
• [x] Update the CHANGELOG under the current -dev version:
  • Add changelog entries under any that apply: BREAKING CHANGES, NEW FEATURES, BUG FIXES.
  • Changelog entry format: [#<issue number>](<link to issue>) <change description>