Merge Gigantamax Flapple & Appletun

BUR #6853 has been approved by @nonamethanks.

create alias gigantamax_flapple -> gigantamax_flapple/appletun
create alias gigantamax_appletun -> gigantamax_flapple/appletun

The Pokemon Applin can evolve into either Flapple or Appletun, and both of these can then transform into Gigantamax Flapple and Gigantamax Appletun respectively.

The issue is, that while these forms are mechanically different in game, they are visually identical. For a visual database like Danbooru, this means there's no point keeping them separate.

From reading online the only difference seems to be the color of the apple but I don't think it matters for us, given how few posts these tags have. I can't find a visual reference, just some mentions on google, so I'm not sure if that's even correct.

Looking more into it, seems that source could've gotten confused with the shiny form. If not even bulbapedia or serebii can tell the difference then we shouldn't either.

The bulk update request #6853 (forum #194917) has been approved by @nonamethanks.

BUR #6856 has been approved by @nonamethanks.

remove alias gigantamax_appletun -> gigantamax_flapple/appletun
create alias gigantamax_appletun -> gigantamax_flapple/appletun

This one got stuck.

The bulk update request #6856 (forum #194929) has been approved by @nonamethanks.

BUR #6857 has been approved by @nonamethanks.

remove alias gigantamax_appletun -> gigantamax_flapple/appletun
remove implication gigantamax_appletun -> gigantamax
create alias gigantamax_appletun -> gigantamax_flapple/appletun

Ok, I see the bug now. Opened issue #4871.

The bulk update request #6857 (forum #194931) has been approved by @nonamethanks.