[ENH] Split RocketClassifier and RocketRegressor into multiple classes

[MatthewMiddlehurst]

Describe the feature or idea you want to propose

Currently, Rocket, Mini-Rocket and Multi-Rocket are condensed into a single estimator. This is not very consistent with other files we have for similar algorithms i.e. SAST/RSAST, WEASEL/WEASELV2/MUSE etc.

Describe your proposed solution

Split RocketClassifier and RocketRegressor into:

• RocketClassifier
• MiniRocketClassifier
• MultiRocketClassifier
• RocketRegressor
• MiniRocketRegressor
• MultiRocketRegressor

Describe alternatives you've considered, if relevant

There is an argument to be made that we should condense these similar algorithms into a single class instead, but this is simpler for now.

Additional context

No response

[TonyBagnall]

not sure about this, and what about hydra/multirocket hydra?

[TonyBagnall]

the alternative is to go the other way, encapsulate SAST/RSAST, WEASEL, HIVE-COTE etc into single configurable classifiers. One to discuss at the next classification/regression dev meeting

[MatthewMiddlehurst]

Hydra and MRH are already separate