Adjust test artifacts building process

[jan-goral]

Author the user story for this feature

As a developer, I want to generate all test artifacts to proper directory using a single command.

Is your feature request related to a problem? Please describe.
#878

Describe the solution you'd like
We need one script for generating all artifacts but we have many artifacts projects, so a proposed solution is to organize scripts in a tree structure where the main script will run platform scripts and platform scripts will run case-specific scripts, so:

• Add new script for generating all artifact android artifacts, reuse existing android scripts, and adjust each if needed.
• Add new script for generating iOS artifacts
• Add main scripts for generating all flank artifacts

Additional context
This issue is the next step after #898