Add @THIS functionality to SPAWN_EGGs

[WayGroovy]

Is your feature request related to a problem? Please describe. Long ago I had a chance a mob would drop one of it's own spawn eggs: aliases:

• &playerWeapons [ANY_SWORD, PROJECTILE_ARROW@PLAYER]

• &dropSpawnEgg tool: *playerWeapons drop: EGG@this/1/4%

Now that Monster Eggs all have unique item names, so I need to have a separate alias for each? Describe the solution you'd like Request drops that are SPAWN_EGG@THIS to associate with /ENTITY/_SPAWN_EGG

Describe alternatives you've considered Considered rolling back to earlier minecraft version

Additional context Thank you for your quick response and assistance