feat(org-chart): add core cards and fixed-layout integration

examples/org-chart/p1-classic.html

@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="ko">
+<head>
+  <meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>HM OrgChart P1 · 직접 열기</title><link rel="icon" href="data:,">
+  <link rel="stylesheet" href="./p1.css">
+</head>
+<body>
+  <main><div id="chart-host"></div></main>
+  <script src="./assets/orgchart.browser.js"></script><script src="./p1-fixture.js"></script>
+  <script src="./p1-app-classic.js"></script><script>startP1(window.HMOrgChart, window.OrgChartP1Fixture);</script>
+</body>
+</html>