Add XD Encounters, Encounter Conditions, Locations, Location Areas, Encounter Methods, and a few more things

[notblisy]

The goal of this PR is to add all the encounter locations, conditions, and items for Pokemon obtainable in Pokemon XD: Gale of Darkness.

This is a fair bit larger than Pokemon Colosseum, as there's 82 Shadow Pokemon in this game, plus a few extra gift Pokemon.

I sourced my data from:

• https://bulbapedia.bulbagarden.net/wiki/List_of_Shadow_Pok%C3%A9mon#List_of_Shadow_Pok%C3%A9mon_in_Pok%C3%A9mon_XD:_Gale_of_Darkness for shadows

• https://bulbapedia.bulbagarden.net/wiki/Gateon_Port#Trainers for dragonites condition, at the bottom with mirror b

• https://bulbapedia.bulbagarden.net/wiki/Duking for trades

• https://bulbapedia.bulbagarden.net/wiki/Gift_Pok%C3%A9mon#XD:_Gale_of_Darkness - for the gift Pokemon

For the encounters, I added the usual:

• Locations
• Location_Areas
• Encounter_Slots
• Encounters
• Pokemon_items

In addition to all the relevant prose for these.

On top of that, I've added a new encounter method:

• Pokespot

This is a unique way to catch wild Pokemon in XD, where you leave a snack out for a Pokemon, and one of 3 different Pokemon can come to eat it. Then you get to do a wild battle and capture.

During my time modeling XD, I noticed that while there IS an NPC-Trade option in encounter_methods.csv, this doesn't allow us to note WHICH Pokemon the player would have to trade. So, I added a new encounter condition called:

• trade

Then, in encounter_condition_values.csv I would describe both the NPCs name and Pokemon to trade them.

An example is that for a larvitar, duking wants a wooper. So I have the encounter condition value id set to:

• 112,15,trade-duking-wooper,0

Encounter conditions seem to be rarely used so far in the API, but I think they are a great way to add specificity to encounters like trades or gifts outside of just locations. I hope this was okay to add!

[notblisy]

I think that for encounter condition value map I might have put the wrong value? Is 0
Or 1 what it needs to be for the condition to be true?