implement createContextualFragment proxy

Author: velzie

src/client/dom/fragments.ts

@@ -0,0 +1,10 @@
+import { rewriteHtml } from "../../shared/rewriters/html";
+import { ScramjetClient } from "../client";
+
+export default function (client: ScramjetClient, _self: Self) {
+	client.Proxy("Range.prototype.createContextualFragment", {
+		apply(ctx) {
+			ctx.args[0] = rewriteHtml(ctx.args[0], client.cookieStore, client.meta);
+		},
+	});
+}