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

PkmnLib.Dynamic/Models/Battle.cs

@@ -467,7 +467,7 @@ public class BattleImpl : ScriptSource, IBattle
         var oldWeatherName = WeatherScript.Script?.Name;
         if (weatherName.HasValue)
         {
-            if (weatherName == oldWeatherName)
+            if (oldWeatherName == weatherName.Value)
             {
                 // Extend duration of existing weather
                 if (_weatherScript.Script is ILimitedTurnsScript existingWeatherScript)

PkmnLib.Dynamic/Models/Pokemon.cs

@@ -1482,12 +1482,14 @@ public class PokemonImpl : ScriptSource, IPokemon
         return true;
     }
 
+    private static readonly StringKey FlyingTypeName = "flying";
+
     /// <inheritdoc />
     public bool IsFloating
     {
         get
         {
-            var isFloating = Types.Any(x => x.Name == "flying");
+            var isFloating = Types.Any(x => x.Name == FlyingTypeName);
             this.RunScriptHook<IScriptIsFloating>(x => x.IsFloating(this, ref isFloating));
             return isFloating;
         }