gift-pokemon: fix Cosplay Pikachu and Sinnoh starter gift locations

Cosplay Pikachu was listed as being encountered in contest-hall, but
that's a Sinnoh location. In OR/AS, the contest halls are not a
first-class location but rather just treated as part of the town or city
they are in. Cosplay Pikachu is given to the player after they
participate in their first contest, so its location can be any of the
four cities with a contest hall.

The Sinnoh starter that the player obtains in OR/AS is on Hoenn Route
101, not Sinnoh Route 201 (probably a copy/paste error).

Add a test to make sure that encounter regions always match the
region(s) that their game takes place in.

pokedex/data/csv/encounters.csv

@@ -46757,72 +46757,78 @@ id,version_id,location_area_id,encounter_slot_id,pokemon_id,min_level,max_level
 50467,26,393,503,255,5,5
 50468,25,393,503,258,5,5
 50469,26,393,503,258,5,5
-50470,25,784,503,25,20,20
-50471,26,784,503,25,20,20
-50472,25,785,503,381,30,30
-50473,26,785,503,380,30,30
-50474,25,769,503,351,30,30
-50475,26,769,503,351,30,30
-50476,25,393,503,152,5,5
-50477,26,393,503,152,5,5
-50478,25,393,503,155,5,5
-50479,26,393,503,155,5,5
-50480,25,393,503,158,5,5
-50481,26,393,503,158,5,5
-50482,25,393,503,495,5,5
-50483,26,393,503,495,5,5
-50484,25,393,503,498,5,5
-50485,26,393,503,498,5,5
-50486,25,393,503,501,5,5
-50487,26,393,503,501,5,5
-50488,25,770,503,374,1,1
-50489,26,770,503,374,1,1
-50490,25,141,503,387,5,5
-50491,26,141,503,387,5,5
-50492,25,141,503,390,5,5
-50493,26,141,503,390,5,5
-50494,25,141,503,393,5,5
-50495,26,141,503,393,5,5
-50496,25,786,503,323,40,40
-50497,26,786,503,323,40,40
-50498,25,786,503,319,40,40
-50499,26,786,503,319,40,40
-50500,4,189,504,175,5,5
-50501,5,189,504,175,5,5
-50502,6,189,505,175,5,5
-50503,6,205,505,172,5,5
-50504,6,205,505,173,5,5
-50505,6,205,505,174,5,5
-50506,6,205,505,236,5,5
-50507,6,205,505,238,5,5
-50508,6,205,505,239,5,5
-50509,6,205,505,240,5,5
-50510,7,787,506,360,5,5
-50511,8,787,506,360,5,5
-50512,9,787,507,360,5,5
-50513,10,518,508,175,5,5
-50514,11,518,508,175,5,5
-50515,12,788,509,175,1,1
-50516,13,788,509,175,1,1
-50517,14,788,510,175,1,1
-50518,12,789,509,440,1,1
-50519,13,789,509,440,1,1
-50520,12,124,509,447,1,1
-50521,13,124,509,447,1,1
-50522,14,124,510,447,1,1
-50523,15,790,511,175,1,1
-50524,16,790,511,175,1,1
-50525,15,791,511,179,1,1
-50526,16,791,511,179,1,1
-50527,15,791,511,194,1,1
-50528,16,791,511,194,1,1
-50529,15,791,511,218,1,1
-50530,16,791,511,218,1,1
-50531,17,653,512,636,1,1
-50532,18,653,512,636,1,1
-50533,21,792,513,440,1,1
-50534,22,792,513,440,1,1
-50535,25,787,514,360,1,1
-50536,26,787,514,360,1,1
-50537,25,787,514,175,1,1
-50538,26,787,514,175,1,1
+50470,25,793,503,25,20,20
+50471,26,793,503,25,20,20
+50472,25,794,503,25,20,20
+50473,26,794,503,25,20,20
+50474,25,795,503,25,20,20
+50475,26,795,503,25,20,20
+50476,25,796,503,25,20,20
+50477,26,796,503,25,20,20
+50478,25,785,503,381,30,30
+50479,26,785,503,380,30,30
+50480,25,769,503,351,30,30
+50481,26,769,503,351,30,30
+50482,25,393,503,152,5,5
+50483,26,393,503,152,5,5
+50484,25,393,503,155,5,5
+50485,26,393,503,155,5,5
+50486,25,393,503,158,5,5
+50487,26,393,503,158,5,5
+50488,25,393,503,495,5,5
+50489,26,393,503,495,5,5
+50490,25,393,503,498,5,5
+50491,26,393,503,498,5,5
+50492,25,393,503,501,5,5
+50493,26,393,503,501,5,5
+50494,25,770,503,374,1,1
+50495,26,770,503,374,1,1
+50496,25,393,503,387,5,5
+50497,26,393,503,387,5,5
+50498,25,393,503,390,5,5
+50499,26,393,503,390,5,5
+50500,25,393,503,393,5,5
+50501,26,393,503,393,5,5
+50502,25,786,503,323,40,40
+50503,26,786,503,323,40,40
+50504,25,786,503,319,40,40
+50505,26,786,503,319,40,40
+50506,4,189,504,175,5,5
+50507,5,189,504,175,5,5
+50508,6,189,505,175,5,5
+50509,6,205,505,172,5,5
+50510,6,205,505,173,5,5
+50511,6,205,505,174,5,5
+50512,6,205,505,236,5,5
+50513,6,205,505,238,5,5
+50514,6,205,505,239,5,5
+50515,6,205,505,240,5,5
+50516,7,787,506,360,5,5
+50517,8,787,506,360,5,5
+50518,9,787,507,360,5,5
+50519,10,518,508,175,5,5
+50520,11,518,508,175,5,5
+50521,12,788,509,175,1,1
+50522,13,788,509,175,1,1
+50523,14,788,510,175,1,1
+50524,12,789,509,440,1,1
+50525,13,789,509,440,1,1
+50526,12,124,509,447,1,1
+50527,13,124,509,447,1,1
+50528,14,124,510,447,1,1
+50529,15,790,511,175,1,1
+50530,16,790,511,175,1,1
+50531,15,791,511,179,1,1
+50532,16,791,511,179,1,1
+50533,15,791,511,194,1,1
+50534,16,791,511,194,1,1
+50535,15,791,511,218,1,1
+50536,16,791,511,218,1,1
+50537,17,653,512,636,1,1
+50538,18,653,512,636,1,1
+50539,21,792,513,440,1,1
+50540,22,792,513,440,1,1
+50541,25,787,514,360,1,1
+50542,26,787,514,360,1,1
+50543,25,787,514,175,1,1
+50544,26,787,514,175,1,1

pokedex/data/csv/location_area_prose.csv

@@ -650,3 +650,7 @@ location_area_id,local_language_id,name
 790,9,Poke Mart
 791,9,Pokemon Center
 792,9,West Gate
+793,9,Contest Hall
+794,9,Contest Hall
+795,9,Contest Hall
+796,9,Contest Hall

pokedex/data/csv/location_areas.csv

@@ -682,3 +682,7 @@ id,location_id,game_index,identifier
 790,153,0,poke-mart
 791,153,0,pokemon-center
 792,349,0,west-gate
+793,430,0,contest-hall
+794,571,0,contest-hall
+795,570,0,contest-hall
+796,431,0,contest-hall