Created VotesApi project nad re-worked vote rewards handling

src/NadekoBot/Common/IBotCredentials.cs

@@ -20,8 +20,7 @@ namespace NadekoBot
         string PatreonCampaignId { get; }
         string CleverbotApiKey { get; }
         RestartConfig RestartCommand { get; }
-        string VotesUrl { get; }
-        string VotesToken { get; }
+        Creds.VotesSettings Votes { get; }
         string BotListToken { get; }
         string RedisOptions { get; }
         string LocationIqApiKey { get; }