[POC] Azure integration part 1 (TLS)

[tanvirBsmrstu]

Contribution description (sock_tls_new_poc module)

This PR is the first part of the Azure integration feature in RIOT, consisting of only the TLS module. A few following PRs will be for MQTTS and Azure.

This is only a proof-of-concept, and the idea is to port the POC into RIOT so that others can work on it and make the solution mature for production.

Testing procedure

• Will be provided with subsequent PRs.

• [1st part of the pull request(#20223 ) so that the code review is clean and easier ]

Thanks, Tanvir Hasan

authored-by: tanvirBsmrstu [email protected]

[tanvirBsmrstu]

I will make another commit later tonight, resolving the static checks. Is there any other way, I can do these test in my local machine so that I can confirm everything works?