GainAbilityTargetEffect and other must able to give EntersBattlefieldAbility for cards/permanents

from #13377

Looks like `GainAbilityTargetEffect` doesn't work for cards like [[What Must Be Done]] or [[Necromantic Summons]] (can't give `EntersBattlefieldAbility`).

Maybe there are some limitation for `EntersBattlefieldAbility` (e.g. it works for source only). Need research.

Code example for alternative implementation of What Must Be Done (from #13377):

``` java
// * Release Juno -- Return target historic permanent card from your graveyard to the battlefield. It enters with two additional +1/+1 counters on it if it's a creature.
Mode mode = new Mode(new ReturnFromGraveyardToBattlefieldTargetEffect());
mode.addEffect(new GainAbilityTargetEffect(
new EntersBattlefieldAbility(
new AddCountersSourceEffect(CounterType.P1P1.createInstance(2)),
WhatMustBeDoneSourceIsCreatureCondition.instance,
null,
null
),
Duration.EndOfTurn,
"It enters with two additional +1/+1 counters on it if it's a creature.",
false
));
mode.addTarget(new TargetCardInYourGraveyard(filterHistoricPermanentCard));
this.getSpellAbility().addMode(mode.withFlavorWord("Release Juno"));
```
``` java
enum WhatMustBeDoneSourceIsCreatureCondition implements Condition {

instance;

@Override
public boolean apply(Game game, Ability source) {
MageObject object = game.getObject(source);
return object != null && object.isCreature(game);
}
}
```