Rename 'process' method to 'launch' across core and realms

[glrs]

This pull request focuses on renaming the process method to launch across different project classes and scripts. This renaming aims to reflect the method's purpose better, improve code clarity, and avoid confusion with the sample's class process method. Also, remove the pre_process methods since they have not been used and have fallen out of scope.

Method renaming:

• lib/base/abstract_project.py: Renamed the process method to launch in the abstract base class and updated the docstring to reflect the new method name.
• lib/realms/smartseq3/smartseq3.py: Renamed the process method to launch and updated the corresponding docstring. Removed the pre_process method as it was no longer needed. [1] [2]
• lib/realms/tenx/tenx_project.py: Renamed the process method to launch and updated the corresponding docstring. Removed the pre_process method as it was no longer needed.

Script updates:

• ygg-mule.py: Updated the call from realm.process() to realm.launch() to align with the method renaming.
• ygg_trunk.py: Updated the call from realm.process() to realm.launch() to align with the method renaming.