[ENH] Remove two hard coded arrays from minirocket

[TonyBagnall]

part of #1699 currently in minirocket we have two huge hard coded arrays in both fit and transform, this replaces both with a numba function to work out permutations.

Could instead replace by a function that returns the hard coded 84x3 array, but this will not be costly and its neater.

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[TonyBagnall]

@patrickzib @baraline how about this?

[baraline]

@patrickzib @baraline how about this?

Don't know much about the implications of initializing it like this, I thought you could do it at the start of _fit, but both should be somewhat similar I guess ?

[TonyBagnall]

@patrickzib @baraline how about this?

Don't know much about the implications of initializing it like this, I thought you could do it at the start of _fit, but both should be somewhat similar I guess ?

In Java this would be called once as a singleton first time an instance was created. If you do it in fit then you may as well use the numba version I implemented before.

[TonyBagnall]

just confirmed via the font of all knowledge:)