feat: add new APi for Discussion

src/main/java/org/kohsuke/github/GHTeam.java

@@ -130,6 +130,19 @@ public class GHTeam extends GHObject implements Refreshable {
         root.createRequest().method("PATCH").with("privacy", privacy).withUrlPath(api("")).send();
     }
 
+    /**
+     * Retrieves the discussions.
+     *
+     * @return the paged iterable
+     * @throws IOException
+     *             the io exception
+     */
+    public PagedIterable<GHDiscussion> listDiscussions() throws IOException {
+        return root.createRequest()
+                .withUrlPath(api("/discussions"))
+                .toIterable(GHDiscussion[].class, item -> item.wrapUp(root));
+    }
+
     /**
      * Retrieves the current members.
      *
@@ -297,6 +310,21 @@ public class GHTeam extends GHObject implements Refreshable {
         return "/teams/" + getId() + tail;
     }
 
+    /**
+     * Starts a builder that creates a new discussion.
+     *
+     * <p>
+     * You use the returned builder to set various properties, then call {@link GHDiscussionBuilder#create()} to finally
+     * create a discussion.
+     *
+     * @param name
+     *            the name
+     * @return the gh create discussion builder
+     */
+    public GHDiscussionBuilder createDiscussion(String name) throws IOException {
+        return new GHDiscussionBuilder(this, name);
+    }
+
     /**
      * Gets organization.
      *