DRAFT: Add base service and env updates for webhook tests

src/main/java/org/eclipsefoundation/git/eca/model/WebhookBody.java

+package org.eclipsefoundation.git.eca.model;
+
+import java.util.Date;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
+import com.google.auto.value.AutoValue;
+
+public abstract class WebhookBody {
+    public abstract Date getCreatedAt();
+    public abstract Date getUpdatedAt();
+    public abstract String getEventName();
+    public abstract String getUserEmail();
+    public abstract String getUserName();
+    public abstract String getUserUsername();
+    public abstract int getUserId();
+
+    public static abstract class Builder<T extends Builder<T>>  {
+        public abstract T setCreatedAt(Date createdAt);
+        public abstract T setUpdatedAt(Date updatedAt);
+        public abstract T setEventName(String eventName);
+        public abstract T setUserEmail(String userEmail);
+        public abstract T setUserName(String userName);
+        public abstract T setUserUsername(String userUsername);
+        public abstract T setUserId(int userId);
+    }
+
+    @AutoValue
+    @JsonDeserialize(builder = AutoValue_WebhookBody_GroupAccessWebhook.Builder.class)
+    public static abstract class GroupAccessWebhook extends WebhookBody {
+        public abstract String getGroupName();
+        public abstract String getGroupPath();
+        public abstract String getGroupAccess();
+        public abstract int getGroupId();
+
+        public static Builder builder() {
+            return new AutoValue_WebhookBody_GroupAccessWebhook.Builder();
+        }
+
+        @AutoValue.Builder
+        @JsonPOJOBuilder(withPrefix = "set")
+        public static abstract class Builder extends WebhookBody.Builder<Builder> {
+            public abstract Builder setGroupName(String groupName);
+            public abstract Builder setGroupPath(String groupPath);
+            public abstract Builder setGroupAccess(String groupAccess);
+            public abstract Builder setGroupId(int groupId);
+            public abstract GroupAccessWebhook build();
+        }
+    }
+}