Add issue pin repositioning

Co-Authored-By: Virgil <virgil@lethean.io>

issues.go

@@ -31,6 +31,12 @@ func (s *IssueService) Pin(ctx context.Context, owner, repo string, index int64)
 	return s.client.Post(ctx, path, nil, nil)
 }
 
+// MovePin moves a pinned issue to a new position.
+func (s *IssueService) MovePin(ctx context.Context, owner, repo string, index, position int64) error {
+	path := ResolvePath("/api/v1/repos/{owner}/{repo}/issues/{index}/pin/{position}", pathParams("owner", owner, "repo", repo, "index", int64String(index), "position", int64String(position)))
+	return s.client.Patch(ctx, path, nil, nil)
+}
+
 // Unpin unpins an issue.
 func (s *IssueService) Unpin(ctx context.Context, owner, repo string, index int64) error {
 	path := ResolvePath("/api/v1/repos/{owner}/{repo}/issues/{index}/pin", pathParams("owner", owner, "repo", repo, "index", int64String(index)))

issues_test.go

@@ -187,6 +187,24 @@ func TestIssueService_Pin_Good(t *testing.T) {
 	}
 }
 
+func TestIssueService_MovePin_Good(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPatch {
+			t.Errorf("expected PATCH, got %s", r.Method)
+		}
+		if r.URL.Path != "/api/v1/repos/core/go-forge/issues/42/pin/3" {
+			t.Errorf("wrong path: %s", r.URL.Path)
+		}
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer srv.Close()
+
+	f := NewForge(srv.URL, "tok")
+	if err := f.Issues.MovePin(context.Background(), "core", "go-forge", 42, 3); err != nil {
+		t.Fatal(err)
+	}
+}
+
 func TestIssueService_DeleteStopwatch_Good(t *testing.T) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodDelete {