Support for SNI and dynamic certificate

[Ana06]

• Dynamically generate a certificate based on client request using Server Name Indication (SNI).
• Sign the new certificate with either a static CA certificate, or with a newly generated CA.
• Add config options to specify a path to static CA certificate.

Override #98 I have squashed to one commit for simplicity and rebased to the last merge from that PR, the last commit before Dec 11 2023: ac33a706274d3e567080d261f7886fd472378ffa. It is still missing to rebase from that commit to the current master branch. There has been only 5 commits since them, but they include important changes. I think @tinajohnson that is more familiar with this changes can take it from here 😉

[tinajohnson]

This is awesome, thank you for your Git magic, @Ana06!

[Ana06]

Thanks for rebasing @tinajohnson! 🚀 I have squashed the two commits, so that we have a single commit with the new changes. @htnhan we needed to recreate the PR, to clarify that you wrote this code while you were employed at FireEye/Mandiant/Google and Google holds the copyright, following the advise we received from Google legal. The new commit has:

• The original author of the code (@htnhan) as author
• @tinajohnson and @strictlymike, that rebased the original code so that it can be merged, as co-authors
• I am the committer.

Thanks @htnhan for implementing this feature!

[Ana06]

The CLA check is working and it seems @htnhan has signed the CLA :

The reason the previous PR was failing is because one of @htnhan commits was missing the author:

That means we do not need to recreate other PRs from @htnhan where the all commits have him as author. In any case, it was easier to rebase the change with less commits. 😉

Thanks @htnhan, @tinajohnson and @strictlymike for you work to get this finished! 😊

[htnhan]

Hi @Ana06, just to confirm, do you need anything from me for this PR?

[Ana06]

Hi @htnhan! 😊 No, we needed to squash the commits and add a sentence to the resulting commit to clarify that Google holds the copyright of the code you wrote because the original PR had a commit without author and the CLA check failed. I hope you are ok with this. Thank for asking and for implementing this code some years ago! @strictlymike and @tinajohnson are testing it and we are aiming to merge it in the next weeks. Looking forward to finally being able to use it! 🚀

[mr-tz]

🥳 🥳 🥳