♻️ Refactor Mediatool, 2.0 backlog issues

[mgardzinski]

Summary

Prefect migration 2.0 backlog changes for Mediatool, related to issues:

• Document Mediatool._rename_columns() #1062
• Mediatool - move connector logic from Prefect task to the connector #1061
• Mediatool - rename method param to endpoint #1060
• BigQuery and Mediatool - remove api_connection() method  #1049

Importance

Fixing bug, clean code

Checklist

This PR:

• follows the guidelines laid out in CONTRIBUTING.md
• links relevant issue(s)
• adds/updates tests (if appropriate)
• adds/updates docstrings (if appropriate)
• adds an entry in CHANGELOG.md

[trymzet]

Just two minor comments. This looks much better than before, good job!

[mgardzinski]

Thanks for the review! Quick question: Can I merge this (and the rest of the PRs), or do I need to bump the version? I'm not sure what the convention is for this.

[trymzet]

@mgardzinski yes you can merge without bumping. The release is done whenever you bump the version in pyproject.toml and merge that into 2.0, so eg. you can do the release as part of the last merged PR or as a separate PR.