chore: change IsFinal type from Int to Boolean (#38)

Author: renao

src/main/kotlin/org/retroachivements/api/data/pojo/game/GetGameInfoAndUserProgress.kt

@@ -48,7 +48,7 @@ class GetGameInfoAndUserProgress {
         val releasedAtGranularity: String?,
 
         @SerializedName("IsFinal")
-        val isFinal: Int,
+        val isFinal: Boolean,
 
         @SerializedName("RichPresencePatch")
         val richPresencePatch: String,

src/main/resources/mock/v1/game/GetGameInfoAndUserProgress.json

@@ -12,7 +12,7 @@
   "Developer": "",
   "Genre": "",
   "Released": "June 23, 1991",
-  "IsFinal": 0,
+  "IsFinal": false,
   "RichPresencePatch": "cce60593880d25c97797446ed33eaffb",
   "players_total": 27080,
   "achievements_published": 23,
@@ -48,4 +48,4 @@
   "NumDistinctPlayersHardcore": 27080,
   "UserCompletion": "100.00%",
   "UserCompletionHardcore": "100.00%"
-}
+}