deps: start working on ncrypto dep

Start moving src/crypto functionality out to a separate dep that
can be shared with other projects that need to emulate Node.js
crypto behavior.

PR-URL: nodejs/node#53803
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

Author: jasnell

README.md

@@ -0,0 +1,5 @@
+# Node.js crypto (ncrypto) library
+
+The `ncrypto` library extracts the base internal implementation of Node.js crypto operations
+that support both `node:crypto` and Web Crypto implementations and makes them available for
+use in other projects that need to emulate Node.js' behavior.