feat: paginated gh pull request query builder

Author: Anonycoders

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

@@ -86,6 +86,18 @@ public PagedIterable<GHPullRequest> list() {
                 .toIterable(GHPullRequest[].class, item -> item.wrapUp(repo));
     }
 
+    /**
+     * Page size gh pull request query builder.
+     *
+     * @param pageSize
+     *            the page size
+     * @return the gh pull request query builder
+     */
+    public GHPullRequestQueryBuilder pageSize(int pageSize) {
+        req.with("per_page", pageSize);
+        return this;
+    }
+
     /**
      * Sort gh pull request query builder.
      *

src/test/java/org/kohsuke/github/GHPullRequestTest.java

@@ -729,6 +729,7 @@ public void queryPullRequestsQualifiedHead() throws Exception {
                 .state(GHIssueState.OPEN)
                 .head("hub4j-test-org:test/stable")
                 .base("main")
+                .pageSize(5)
                 .list()
                 .toList();
         assertThat(prs, notNullValue());

src/test/resources/org/kohsuke/github/GHPullRequestTest/wiremock/queryPullRequestsQualifiedHead/mappings/6-r_h_g_pulls.json

@@ -2,7 +2,7 @@
   "id": "ab74613d-0613-47a8-a6fc-34add77d9967",
   "name": "repos_hub4j-test-org_github-api_pulls",
   "request": {
-    "url": "/repos/hub4j-test-org/github-api/pulls?state=open&head=hub4j-test-org%3Atest%2Fstable&base=main",
+    "url": "/repos/hub4j-test-org/github-api/pulls?state=open&head=hub4j-test-org%3Atest%2Fstable&base=main&per_page=5",
     "method": "GET",
     "headers": {
       "Accept": {