Add import for WireMock to exercises

Author: basdijkstra

src/test/java/exercises/WireMockExercises1Test.java

@@ -7,6 +7,7 @@
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
+import static com.github.tomakehurst.wiremock.client.WireMock.*;
 import static io.restassured.RestAssured.given;
 
 @WireMockTest(httpPort = 9876)