Add nasl functions for checking ssl/tls secure renegotiation and performing re-handshake (backport #889)

[mergify]

This is an automatic backport of pull request #889 done by Mergify.
Cherry-pick of 641ab33 has failed:

On branch mergify/bp/stable/pr-889
Your branch is up to date with 'origin/stable'.

You are currently cherry-picking commit 641ab331.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   misc/network.c
	modified:   misc/network.h
	modified:   nasl/nasl_init.c
	modified:   nasl/nasl_socket.c
	modified:   nasl/nasl_socket.h

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   CHANGELOG.md

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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