create implications: oran, pecha, leppa, sitrus -> berry_(pokemon)

BUR #2802 has been approved by @NWF_Renim.

create implication oran_berry -> berry_(pokemon)
create implication pecha_berry -> berry_(pokemon)
create implication leppa_berry -> berry_(pokemon)
create implication sitrus_berry -> berry_(pokemon)

These are the Pokémon berries with most posts.

Oran Berry = 69 posts
Pecha Berry = 61 posts
Sitrus Berry = 42 posts
Leppa Berry = 25 posts

There are also dozens of berries with fewer posts (see list at berry_(pokemon)), but I think they probably don't need that kind of implication at the moment.

EDIT: The bulk update request #2802 (forum #167606) has been approved by @NWF_Renim.