DRAFT: GONRG-2978: Refactor Base Client init

Type of change

• Bug Fix
• Feature

Does this introduce a change in the core logic?

• [Yes]

Does this introduce a change in the cloud provider implementation, if so which cloud?

• AWS
• Azure
• GCP
• IBM

Updates description?

This MR implements changes described in this issue: #5 (closed)

1. Use BasicClient class as an abstract class or as a real base class.
2. Remove configuration initialization from BasicClass.__init__ method.
3. For each client class specify the client specific attributes for __init__ metho