added login logic excl refresh call

backend/src/main/java/com/vaessl/app/connection/HomeboxEntity.java

@@ -0,0 +1,34 @@
+package com.vaessl.app.connection;
+
+import java.time.Instant;
+
+import com.vaessl.app.dto.ConnectionRequest;
+import com.vaessl.app.dto.ConnectionResponse;
+
+import jakarta.persistence.DiscriminatorValue;
+import jakarta.persistence.Entity;
+import lombok.Getter;
+import lombok.Setter;
+
+@Entity
+@DiscriminatorValue("HOMEBOX")
+@Getter
+@Setter
+public class HomeboxEntity extends ConnectionEntity {
+
+    private String token;
+    private String attachmentToken;
+    private Instant expiresAt;
+
+    public static HomeboxEntity from(ConnectionRequest request, ConnectionResponse response) {
+
+        HomeboxEntity he = new HomeboxEntity();
+
+        he.setAppUrl(request.appUrl());
+        he.setToken(response.token());
+        he.setAttachmentToken(response.getExtraVar("attachmentToken"));
+        he.setExpiresAt(response.expiresAt());
+
+        return he;
+    }
+}