Read randomisation boundaries from an input config file

[sfmig]

Code modified in install_and enable_addons.py which reads in .json file (example provided in repo) that is argument in randomisation_seed.sh to set the min-max bounds as well as initial value if necessary for:

• Camera transforms
• Geometry *
• Materials *
• User defined props *

*need to make sure exist before initialising

if self.input_json is this actually used/useful or should it be removed?

[ruaridhg]

Create json function or script for input parameters that are then used in install_randomiser.sh/install_and enable_addons.py

[ruaridhg]

Test cases for transforms:

• - delta_location and delta_rotation_euler
• - location and rotation_euler
• - delta_location and rotation_euler (i.e. incompatible so code puts to location and rotation_euler)
• - complete misspelling of either one (i.e. incompatible so code puts to location and rotation_euler)