fix: add generation ix

Author: bitomic

data/v2/csv/generation_names.csv

@@ -54,3 +54,7 @@ generation_id,local_language_id,name
 8,7,Generación VIII
 8,9,Generation VIII
 8,11,第八世代
+9,5,Génération IX
+9,6,Generation IX
+9,7,Generación IX
+9,9,Generation IX

data/v2/csv/generations.csv

@@ -7,3 +7,4 @@ id,main_region_id,identifier
 6,6,generation-vi
 7,7,generation-vii
 8,8,generation-viii
+9,9,generation-ix