Converts more defines to enums and name unnamed enums (#7071)

Co-authored-by: Alex <93446519+AlexOn1ine@users.noreply.github.com>

docs/tutorials/how_to_new_pokemon.md

@@ -314,7 +314,8 @@ Cry_Pecharunt::
 Then we add the cry ID to [include/constants/cries.h](https://github.com/rh-hideout/pokeemerald-expansion/blob/master/include/constants/cries.h):
 
 ```diff
-enum {
+enum PokemonCry
+{
     CRY_NONE,
     ...
 #if P_FAMILY_TERAPAGOS
@@ -371,7 +372,8 @@ Edit [include/constants/pokedex.h](https://github.com/rh-hideout/pokeemerald-exp
 
 ```diff
 // National Pokedex order
-enum {
+enum NationalDexOrder
+{
     NATIONAL_DEX_NONE,
     // Kanto
     NATIONAL_DEX_BULBASAUR,
@@ -394,7 +396,8 @@ Do keep in mind that if you intend to add your new species to the Hoenn Dex, you
 
 ```diff
 // Hoenn Pokedex order
-enum {
+enum HoennDexOrder
+{
     HOENN_DEX_NONE,
     HOENN_DEX_TREECKO,
 ...