feat(regexp-escape): create @endo/regexp-escape index

Export the regexpEscape function from the package.

Affected files: index.js

Signed-off-by: andoan16 <33853760+andoan16@users.noreply.github.com>

Author: andoan16

packages/regexp-escape/index.js

@@ -0,0 +1 @@
+export { regexpEscape } from './src/regexp-escape.js';