Update spin/jet AGN model

doc/RTD/source/SubgridModels/AGNSpinJets/params.rst

...sedCluster/IdealisedCluster_M13/idealised_cluster_M13.yml

...dCluster/IdealisedCluster_M135/idealised_cluster_M135.yml

...sedCluster/IdealisedCluster_M14/idealised_cluster_M14.yml

...sedCluster/IdealisedCluster_M15/idealised_cluster_M15.yml

examples/IdealisedCluster/README

examples/parameter_example.yml

src/black_holes/SPIN_JET/black_holes.h

src/black_holes/SPIN_JET/black_holes_iact.h

src/black_holes/SPIN_JET/black_holes_part.h

src/black_holes/SPIN_JET/black_holes_properties.h

src/black_holes/SPIN_JET/black_holes_spin.h

src/black_holes_properties.h

src/random.h

src/tracers/EAGLE/tracers.h

src/tracers/EAGLE/tracers_io.h

src/tracers/EAGLE/tracers_struct.h

tests/testRandomCone.c