Added italian translations

[AndryCola]

With those commits i added the italian entries for the files:

encounter_condition_value_prose encounter_condition_prose encounter_method_prose evolution_trigger_prose generation_names language_names location_area_prose location_names move_damage_class_prose move_flavor_text move_names pokedex_prose pokemon_form_names pokemon_habitat_names pokemon_move_method_prose pokemon_species_flavor_summaries pokemon_species_flavor_text

[andre-bacci]

Diffs are bigger than expected for some reason, maybe data formatting differs; shouldn't this pull request only be adding lines?