Add tracking for the various pets from Delves

[rdw-software]

Probably need to rely on tooltip scanning here, but wowhead data suggests some objects are present in multiple delves...

It would be possible to use the map ID in this case, but it complicates the detection and would require ingame testing.

Roadmap:

• [x] Add the relevant pets to the item DB
  • [x] Bouncer
  • [x] Wriggle
  • [x] Chester
  • [x] Violent Sporbit
  • [x] Sneef
• [ ] Add UI map IDs to the shared constants
  • [ ] Bountiful Heavy Trunk locations
  • [ ] Hidden Trove locations
  • [ ] Bountiful Coffer locations
  • [ ] Resolve duplicate map IDs (TBD: Are they just different subzones? Where exactly are the chests?)
• [ ] Add world object names to the nodes DB
  • [ ] Bountiful Heavy Trunk (alternate version)
  • [ ] Hidden Trove
  • [ ] Bountiful Coffer
• [x] TBD: Are there shared object names? (Yes, so may have to to differentiate by map ID in the core) -> Heavy Trunk :(
• [ ] Add event handling for the various objects and Delves locations
  • [ ] Bouncer: Nerubian Delves (Earthcrawl Mines, The Dread Pit, Skittering Breach, The Spiral Weave, The Underkeep)
  • [ ] Wriggle: Kobyss Delves (The Sinkhole, Tak-Rethan Abyss)
  • [ ] Chester: Any Delve (?)
  • [ ] Violent Sporbit: Fungarian Delves (Fungal Folly, Mycomancer Cavern)
  • [ ] Sneef: Kobold Delves (Kriegval's Rest, The Waterworks)
• [ ] Ingame testing (TBD: What's required? Check the wowhead guide)

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Split off from #734.