Adding MostPeripheralsStrategy
Walk a playground

Instead of walking an area (of the same color) walk the playground.
Should be merged somehow to reuse the code.
Fix typos in commends and whitespace
Use playground from member when initializing Solver object
Added TODO
Create FieldColorPalette outside of Playground
Cleanup variable name in playground construction
Add method to construct a playground by copying
Add helper to allow for print(field)
Complare Random and MostPeripherals strategies