Merge pull request 'Export tag interface' (#3) from feature/tags2 into 2.x

Reviewed-on: #3

src/index.ts

@@ -18,3 +18,4 @@ export * from "./interfaces/tournament";
 export * from "./interfaces/guest-player-request";
 export * from "./interfaces/single-tournament";
 export * from "./interfaces/team-championship";
+export * from "./interfaces/tag";