[WIP] Adding PoC w/o comparison for comparison ;-) of test results via GHA

[drwetter]

See #1782.

This check runs first a test against a SSLv2 only server which is using the supplied binary (openssl s_server). Then it runs a almost full run against an openssl s_server (suppiied binary) using also SSLv2.

• Works: basically the whole thing
• Works not yet: comparison (implementation and filtering needed)
• not nice: the perl style using system calls, especially the process handling (tried open3 and using $ENV but didn't succeed). fork() probably could work too, but that'd required more perl skills than I have ;-)