Add configurable minimum number of evolvable pokemon for lucky egg usage

[bjwood]

Ensures that a minimum number of pokemon are ready to be evolved before using a lucky egg. See #632

[maxbrueckl]

But maybe we should collect pokemon to evolve up to the number configured, then use egg and evolve all at once.

This means to skip evolving until the number is reached.

[bjwood]

@maxbrueckl That's what this request aims to achieve. If UseLuckyEggsWhileEvolving is set, the actual evolution process gets skipped until we have reached the minimum number defined. Once we hit that amount, it uses an egg and processes all the evolutions at once.

[maxbrueckl]

Yes, of course. I missed the else branch. my fault, sry