Add get deployment by id endpoint

src/main/java/com/litoralregas/openvpn/deployment/DeploymentController.java

@@ -3,6 +3,7 @@ package com.litoralregas.openvpn.deployment;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
+import java.util.UUID;
 
 @RestController
 @RequestMapping("/api/deployments")
@@ -21,4 +22,12 @@ public class DeploymentController {
                 .map(DeploymentResponse::from)
                 .toList();
     }
+
+    @GetMapping("/{id}")
+    public DeploymentResponse getById(@PathVariable UUID id) {
+        Deployment deployment = repository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("Deployment not found: " + id));
+
+        return DeploymentResponse.from(deployment);
+    }
 }