Phased Solver

All phases of the 3x3 beginner (seem to) work now.

Fixes. OLL (edges) works now, PLL (edges) still does not.

Clean up everything.
Algorithmic MoveProviders do nto seem to work yet. (3x3 Beginner's OLL phase does not work)

Bugfixes

Phased Solver app: debugging

Phased Solver app: show the moveIndex

Progress with PhasedSolver.
Introduce an abstracted TargetQuats.

Progress with PhasedSolver.
Turns out 3x3 beginner phase 3 can still fail.

3x3 beginner should 'mostly' work now (the 'perm of the LL corners' phase can still fail - we need to define appropriate PhaseRegex here)

Seriously re-structure the architecture in preparation for different types of Phases (PhaseRegex!)