[openssl/openssl] d10808: Add "make help" option

[Todd Short]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: d108082377aa5f1c5420ec76ca2e9a5b8fb12a32
      https://github.com/openssl/openssl/commit/d108082377aa5f1c5420ec76ca2e9a5b8fb12a32
  Author: Todd Short <todd.short at me.com>
  Date:   2023-03-06 (Mon, 06 Mar 2023)

  Changed paths:
    M .github/workflows/ci.yml
    M Configurations/unix-Makefile.tmpl
    A util/help.pl

  Log Message:
  -----------
  Add "make help" option

Based on kubernetes controller Makefile help.

Reviewed-by: Richard Levitte <levitte at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20407)