13: Create initial Jupiter Perps position API

src/main/tjava/com/r35157/libs/jupiter/perps/JupiterPerpsPosition.java

@@ -0,0 +1,7 @@
+package com.r35157.libs.jupiter.perps;
+
+public record JupiterPerpsPosition(
+        ΩJupiterPerpsPositionAccountΩ positionAccount,
+        ΩPriceΩ entryPrice
+) {
+}

src/main/tjava/com/r35157/libs/jupiter/perps/JupiterPerpsPosition.tjava

@@ -0,0 +1,9 @@
+package com.r35157.libs.jupiter.perps;
+
+import java.math.BigDecimal;
+
+public record JupiterPerpsPosition(
+        ΩJupiterPerpsPositionAccountΩ positionAccount,
+        ΩPriceΩ entryPrice
+) {
+}

src/main/tjava/com/r35157/libs/jupiter/perps/JupiterPerpsPositionService.tjava

@@ -0,0 +1,5 @@
+package com.r35157.libs.jupiter.perps;
+
+public interface JupiterPerpsPositionService {
+    JupiterPerpsPosition getPosition(ΩJupiterPerpsPositionAccountΩ positionAccount);
+}