chore: Deprecate gems for removal

Looking up the amount of gems a player has will now always return 0 until such a time that we remove it. We've had a fair few complaints that it allows people to "spy" on when/how many purchases are being made for players and that's not something we want.

Also fixes a typo in the docs for chroma packs.

schema.graphqls

@@ -179,7 +179,7 @@ type CosmeticOwnershipState {
 
     "The Chroma Packs that have applied to this cosmetic, if it is colorable."
     chromaPacks: [String!]
-    @spectaql(options: { key: "example", value: "[\"oceanic\", \"natural\"" })
+    @spectaql(options: { key: "example", value: "[\"oceanic\", \"natural\"]" })
 
     "The number of Royal Reputation donations that have been made of this cosmetic, if it can be donated."
     donationsMade: Int
@@ -192,6 +192,7 @@ type Currency {
 
     "The number of gems the player currently has."
     gems: Int!
+    @deprecated(reason: "Deprecated for removal. Will always return 0 until removal.")
 
     "The number of Royal Reputation the player currently has."
     royalReputation: Int!