Adding GCS output and fixing linting issues for few outputs

[P1llus]

Adding support for reading files and sending them to a GCS bucket, or create the bucket if it does not already exist.

[elasticmachine]

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• Start Time: 2023-01-18T10:28:47.800+0000

• Duration: 6 min 33 sec

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Passed	21
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Total	21

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[P1llus]

I also fixed some imports of ioutil which is now deprecated, and the linter was complaining, this includes other outputs as well

[P1llus]

@andrewkroh I am adding in the second environmental variable again, as it otherwise breaks the client:

[andrewkroh]

LGTM. Please update the project readme to include GCS.