feat: include rarity and luck in pet notifications

[iProdigy]

Completes pet component of #139

[iProdigy]

for the rarity calculation, we also need extra scrutiny on the skilling pets

Baby chinchompa: is assuming black chins reasonable Beaver: is assuming teaks reasonable Heron: is assuming tuna/swordfish reasonable Rift guardian: is assuming lava runes reasonable Rock golem: is assuming gemstones reasonable Rocky: is assuming stalls reasonable Tangleroot: is assuming seaweed/mushroom reasonable

@Felanbird @pajlada @Mm2PL @zneix

[pajlada]

I think all of those assumptions are reasonable, and we can change that around if someone else thinks they're completely off. They're always going to be a bit inaccurate which I think is ok

[Felanbird]

~~estimated actions for quetzin was 328, but probably should have been 537+47 (or just 537)~~ rl issue