Make important classes/functions available at the root project level via up-importing through __init__ files

[tipatterson-dev]

Currently, accessing key classes in the project requires importing from deep submodules. To improve developer experience and make the API more user-friendly, expose the most important classes at the root level of the package by up-importing them through the appropriate __init__.py files.

Proposed Steps:

• Identify the most critical classes that should be available for import from the root project level (e.g., from oshconnect import ImportantClass).
• Update the relevant __init__.py files to re-export these classes at the package root.
• Update documentation/examples to reflect the new import paths.

Benefits:

• Simplifies usage for newcomers and existing users.
• Provides a cleaner and more discoverable API surface.

Acceptance Criteria:

• Key classes can be imported directly from the project root.
• Documentation and usage examples are up to date.