Added GameController

src/main/java/MTGClone/controller/GameController.java

@@ -0,0 +1,22 @@
+package MTGClone.controller;
+
+import com.google.gson.Gson;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+import MTGClone.SQLDriver;
+
+@RestController
+public class GameController {
+
+    private final SQLDriver sqlDriver = new SQLDriver();
+    private final Gson gson = new Gson();
+    private final String apiPrefix = "/api/";
+
+    @GetMapping(apiPrefix + "/allcards")
+    String greet() {
+        return gson.toJson(sqlDriver.getAllCards());
+    }
+}