got rid if Map and added username, password and apikey to request body

backend/src/main/java/com/vaessl/app/dto/ConnectionRequest.java

@@ -1,16 +1,15 @@
 package com.vaessl.app.dto;
 
-import java.util.Map;
-
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.NotEmpty;
 
 public record ConnectionRequest(
                 @NotBlank(message = "App URL is mandatory") String appUrl,
                 @NotBlank(message = "Service type is mandatory") String serviceType,
-                @NotEmpty(message = "Credentials are mandatory") Map<String, String> credentials,
+                String username,
+                String password,
+                String apiKey,
                 @JsonProperty(defaultValue = "false") Boolean stayLoggedIn) {
 
         public ConnectionRequest {
@@ -18,4 +17,9 @@ public record ConnectionRequest(
                         stayLoggedIn = false;
                 }
         }
+
+        public ConnectionRequest(String appUrl, String serviceType, String username, String password,
+                        Boolean stayLoggedIn) {
+                this(appUrl, serviceType, username, password, null, stayLoggedIn);
+        }
 }