fix: serve quartz with clean URL support and regenerate site

- Add serve.py to resolve clean Quartz URLs to .html files
- Regenerate Quartz site with correct baseUrl http://100.118.5.51:9120
- 196 HTML files emitted; all internal links now resolve

node_modules/underscore/modules/isSet.js

@@ -0,0 +1,5 @@
+import tagTester from './_tagTester.js';
+import { isIE11 } from './_stringTagBug.js';
+import { ie11fingerprint, setMethods }  from './_methodFingerprint.js';
+
+export default isIE11 ? ie11fingerprint(setMethods) : tagTester('Set');