13: Add new AnchorIdlJupiterPerpsPositionServiceImpl dummy

src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsPositionServiceImpl.java

@@ -0,0 +1,4 @@
+package com.r35157.libs.jupiter.perps.impl.anchoridl;
+
+public class AnchorIdlJupiterPerpsPositionServiceImpl {
+}

src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsPositionServiceImpl.tjava

@@ -0,0 +1,12 @@
+package com.r35157.libs.jupiter.perps.impl.anchoridl;
+
+import com.r35157.libs.jupiter.perps.JupiterPerpsPosition;
+import com.r35157.libs.jupiter.perps.JupiterPerpsPositionService;
+
+public class AnchorIdlJupiterPerpsPositionServiceImpl implements JupiterPerpsPositionService {
+
+    @Override
+    public JupiterPerpsPosition getPosition(ΩJupiterPerpsPositionAccountΩ positionAccount) {
+        throw new UnsupportedOperationException("Reading Jupiter Perps positions is not implemented yet.");
+    }
+}