Added class GameStats, added Pokédex records for eggs seen and expanded seen_forms to include shinies

Data/Scripts/014_Pokemon/001_Pokemon-related/002_ShadowPokemon_Other.rb

@@ -18,6 +18,7 @@ critical hit.
 #===============================================================================
 def pbPurify(pkmn, scene)
   return if !pkmn.shadowPokemon? || pkmn.heart_gauge != 0
+  $stats.shadow_pokemon_purified += 1
   pkmn.shadow = false
   pkmn.giveRibbon(:NATIONAL)
   scene.pbDisplay(_INTL("{1} opened the door to its heart!", pkmn.name))

Data/Scripts/014_Pokemon/001_Pokemon.rb

@@ -797,6 +797,7 @@ class Pokemon
   # @param strain [Integer] Pokérus strain to give
   def givePokerus(strain = 0)
     return if self.pokerusStage == 2   # Can't re-infect a cured Pokémon
+    $stats.pokerus_infections += 1
     strain = rand(1..16) if strain <= 0 || strain >= 16
     time = 1 + (strain % 4)
     @pokerus = time