Add build workflow

[zaelgohary]

[AlaaElattar]

Work In Progress:

• Added Build workflow but still not working right.

[AlaaElattar]

Work In Progress:

• Found that running build.sh script in release mode requires keys and secrets, so instead changed workflow to use debug more.
• Trying to fix bugs && warnings in workflow.

[AlaaElattar]

Work Completed:

• Fixed the bug, and now the workflow is working right.

[AlaaElattar]

Work Completed:

• Updated script to fail if the apk not found or the script has any error.