Feat/poll timeout flag

[Jakub-Vacek]

Description

This PR adds timeout flag to set up timeout for polling the job. This flag is added to operations that use polling. Setting timeout enables to work with larger/more complex documentations

Motivation and Context

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] I have updated the documentation accordingly. For updating Oclif commands documentation use oclif-dev.
• [ ] I have read the CONTRIBUTING document.
• [ ] I haven't repeated the code. (DRY)
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.

[Jakub-Vacek]

It was increased here: https://github.com/superfaceai/cli/pull/370/files#diff-e828f2364c5d76bbf8f6168e86cc4bf9f2239503cad4b10b6990b23d0282c137 - I am not sure what timeout is sane - 300s was enough for everything util foursquare so it probably make sense to keep it 300.