Support Google Cloud Storage as an object storage

[danil-smirnov]

➹ New Feature implementation request

Is your feature request related to a problem?

As users of the Google Cloud Platform, we would like to leverage its cloud object storage in the same way AWS S3 is used.

Describe the solution you'd like

We'd like to have a Google Cloud Storage support in secureCodeBox.

Describe alternatives you've considered

Additional context

[danil-smirnov]

I've found how to use it, maybe documentation could be improved

[Weltraumschaf]

Hi @danil-smirnov,

if you have ideas how to improve the documentation, we're happy to review your PR.