Update to interact with YggDB and follow AbstractProject changes

[glrs]

This pull request includes several updates to the lib/realms/smartseq3 module, focusing on improving the initialization process and database interactions for the SS3Project and SS3Sample classes. The most important changes include reordering imports, updating method names, adding database initialization and sample addition steps, and ensuring the project ID is always available.

Improvements to initialization and database interactions:

• lib/realms/smartseq3/ss3_project.py: Reordered imports to follow standard conventions.
• lib/realms/smartseq3/ss3_project.py: Updated the __init__ method to call super().__init__ and renamed _check_required_fields to check_required_fields. Added a call to initialize_project_in_db if the required fields are present.
• lib/realms/smartseq3/ss3_project.py: Added a call to add_samples_to_project_in_db in the launch method to ensure samples are added to the database before processing.
• lib/realms/smartseq3/ss3_project.py: Updated the extract_samples method to pass yggdrasil_db_manager to the SS3Sample constructor.

Enhancements to SS3Sample class:

• lib/realms/smartseq3/ss3_sample.py: Modified the __init__ method to accept yggdrasil_db_manager and ensure project_id is always available. [1] [2] [3]
• lib/realms/smartseq3/ss3_sample.py: Updated the status setter to update the sample status in the database.