Feature: organizations support

[AlexSim93]

Pull Request

Description

Added ORGANIZATIONS input to fetch all repositories. Setting owners and repos manually is not required anymore. Added validations for inputs. Fixed bug with time calculations on weekend

Type of Change

• [x] Bug fix
• [x] New feature
• [x] Documentation update
• [ ] Other (please specify)

How Has This Been Tested?

Tried to run action with valid and invalid params. Also I have tried different combinations to check that action doesn't requests pull requests twice.

Checklist:

• [x] I have read the CONTRIBUTING document.
• [x] My code follows the code style of this project.
• [ ] I have added tests to cover my changes.
• [x] My changes generate no new warnings.
• [x] I have updated the documentation accordingly.