api: Add Skill entity and SkillController

src/main/java/com/maradona/backend/Skill.java

@@ -0,0 +1,16 @@
+package com.maradona.backend;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+
+@Entity
+public class Skill {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String primary;
+    private String secondary;
+}

src/main/java/com/maradona/backend/SkillController.java

@@ -0,0 +1,18 @@
+package com.maradona.backend;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+
+
+@RestController
+@RequestMapping("/api")
+public class SkillController {
+    
+    @PostMapping("skills")
+    public ResponseEntity<Skill> createSkill(@RequestBody Skill skill) {
+        return ResponseEntity.ok(skill);
+    }
+    
+}