Add API for frameworks and examples (#3514)

* Add API for frameworks and examples

* Adjust headers

* Update frameworks list

* Always use latest

* Add types

* Use now repo for downloading and listing

* Use .existsSync

* Remove unused packages

* Use 307 for redirect

* Add examples

* Update tsconfig.json

Co-Authored-By: Steven <steven@ceriously.com>

* Make examples unique

* Remove detectors from frameworks API

* Use /api instead of Next.js

* Install dependencies

* Rename project

* Change name

* Empty

* Change name

* Update api/tsconfig.json

Co-Authored-By: Steven <steven@ceriously.com>

* Update examples

Co-authored-by: Steven <steven@ceriously.com>

api/_lib/examples/summary.ts

@@ -0,0 +1,20 @@
+/**
+ * Get example list from extracted folder
+ */
+
+import { join } from 'path';
+import { lstatSync, existsSync, readdirSync } from 'fs';
+
+const exists = (path: string) => existsSync(path);
+const isDotFile = (name: string) => name.startsWith('.');
+const isDirectory = (path: string) => lstatSync(path).isDirectory();
+
+export function summary(source: string) {
+  if (!exists(source) || !isDirectory(source)) {
+    return [];
+  }
+
+  return readdirSync(source)
+    .filter(name => !isDotFile(name))
+    .filter(name => isDirectory(join(source, name)));
+}