Sheet config fixes

[charlottekostelic]

• Changed google sheet API credential configuration
  • credentials are now read from env vars rather than a file using Credentials.from_authorized_user_info and InstalledAppFlow.from_client_config
• Added log messages to check if google sheet credentials are configured

[coveralls]

Pull Request Test Coverage Report for Build 11711793906

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 0.0%

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Totals
Change from base Build 11633268809:	0.0%
Covered Lines:	0
Relevant Lines:	0

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💛 - Coveralls