Add AddNewMonsterToStagesWhere & AddSelectedNewMonsters, and publicize base AddNewMonster

[bb010g]

Example code without AddSelectedNewMonsters or public AddNewMonster:

MonsterActions += (dccsPool, mixEnemyArtifactMonsters, currentStage) => {
    DirectorCardHolder? monsterCardHolder;
    monsterCardHoldersByStage.TryGetValue(currentStage.ToInternalStageName(), out monsterCardHolder);
    if (monsterCardHolder is not null) {
        bool addToFamilies = false;

        if (dccsPool) {
            ForEachPoolCategoryInDccsPool(dccsPool, (poolCategory) => {
                var isNotAFamilyCategory = poolCategory.name != MonsterPoolCategories.Family;
                var isAFamilyCategoryAndShouldAddToIt = addToFamilies && poolCategory.name == MonsterPoolCategories.Family;
                if (isNotAFamilyCategory || isAFamilyCategoryAndShouldAddToIt) {
                    ForEachPoolEntryInDccsPoolCategory(poolCategory, (poolEntry) => {
                        AddMonsterToPoolEntry(monsterCardHolder, poolEntry);
                    });
                }
            });
        }

        mixEnemyArtifactMonsters.Add(monsterCardHolder);
    }
};

Example code with AddSelectedNewMonsters (EDIT: removed):

AddSelectedNewMonsters(IEnumerable<Tuple<DirectorCardHolder, bool>> (currentStage) => {
    DirectorCardHolder? monsterCardHolder;
    monsterCardHoldersByStage.TryGetValue(currentStage.ToInternalStageName(), out monsterCardHolder);
    if (monsterCardHolder is not null) {
        return new Tuple<DirectorCardHolder, bool>[] { new(monsterCardHolder, false) };
    }
    return Enumerable.Empty<Tuple<DirectorCardHolder, bool>>();
});

Example code with public AddNewMonster:

MonsterActions += (dccsPool, mixEnemyArtifactMonsters, currentStage) => {
    DirectorCardHolder? monsterCardHolder;
    monsterCardHoldersByStage.TryGetValue(currentStage.ToInternalStageName(), out monsterCardHolder);
    if (monsterCardHolder is not null) {
        AddNewMonster(dccsPool, mixEnemyArtifactMonsters, monsterCardHolder, addToFamilies: false);
    }
};

This AddNewMonster overload is a lot safer to publicize now thanks to the new DCCS system's consistent use and the addition of AddSelectedNewMonsters, which should cover most simple use cases that would otherwise have to use this
function.

[CLAassistant]

All committers have signed the CLA.

[bb010g]

Requesting review from @xiaoxiao921.

[harbingerofme]

Seem really awkward to call? If one already has an ienumerable of directorCardHolders, you could iterate over AddNewMonsterToStagesWhere yorself

[bb010g]

I'd be alright with dropping it.

[bb010g]

Removed.