Replace all raw string comparisons with StringKey, source generator that creates cache keys for all names for Gen7 plugin

Plugins/PkmnLib.Plugin.Gen7/Scripts/Terrain/PsychicTerrain.cs

@@ -15,7 +15,7 @@ public class PsychicTerrain : Script, IScriptIsInvulnerableToMove, IScriptChange
         // It boosts the power of Psychic-type moves used by affected Pokémon by 50% (regardless of whether the target of
         // the move is affected by Psychic Terrain).
         var type = move.GetHitData(target, hit).Type;
-        if (type?.Name == "psychic")
+        if (type?.Name == TypeNames.Psychic)
         {
             basePower = basePower.MultiplyOrMax(1.5f);
         }