Cleanup Alien & Predator (and related) tags

BUR #22837 has been approved by @nonamethanks.

create alias predator -> predator_(character)
remove alias predator -> predator_(character)
rename predators -> predators_(2010)
rename aliens -> aliens_(1986)
create implication predator_(1987) -> predator_(series)
create implication predators_(2010) -> predator_(series)
create implication predator_2 -> predator_(series)
create implication berserker_predator -> predator_(character)
create implication alien_vs._predator -> predator_(series)
create implication alien_vs._predator -> alien_(series)
create implication alien_(movie) -> alien_(1979)
create implication alien:_covenant -> alien_(series)
create implication alien:_isolation -> alien_(series)
create alias 20th_century_fox -> 20th_century_studios
deprecate predator
deprecate predators
deprecate aliens

The tag related to the Alien and Predator really needs some reorganization, especially since there are now some character named "Predator" on the site. I've decided to give the qualifier by year instead because of how closely-named some movie ares. Also giving qualifier to the Predators and Aliens (with "S") to prevent mistagging, as well as updating the name of 20th Century Fox to its current name.

The bulk update request #22837 (forum #266928) has been approved by @nonamethanks.

BUR #23017 has been approved by @nonamethanks.

remove implication alien_(movie) -> alien_(1979)
create alias alien_(movie) -> alien_(1979)
create implication alien_(1979) -> alien_(series)
create implication aliens_(1986) -> alien_(series)

Fixing some issues with the BUR.

alien (1979) needs to be cleaned up, it should only be used for posts referencing the specific movie.

Also predator (1987) does not exist, you should populate it if you want the implication to stay.

The bulk update request #23017 (forum #267540) has been approved by @nonamethanks.

BUR #23018 has been approved by @nonamethanks.

create implication prometheus_(movie) -> alien_(series)
create implication alien_3 -> alien_(series)

There's also these.

The bulk update request #23018 (forum #267542) has been approved by @nonamethanks.

BUR #23411 has been approved by @nonamethanks.

create alias predator_(movie) -> predator_(1987)
remove alias predator_(movie) -> predator_(1987)
create implication predator_(1987) -> predator_(series)
rename the_prey -> the_prey_(norasuko)

This one is not implied to the umbrella tag yet.

Edit: Renamed the first movie tag with the year to disambiguate it with the 2018 movie. Also renamed the unrelated web comic named The Prey since 2022 Predator movie "Prey" exists.

The bulk update request #23411 (forum #269150) has been approved by @nonamethanks.