Support for custom ciphers and protocols for https requests

[Hakky54]

This pull request is an implementation for the following feature request: #380

Usage would be for example:

Unirest.config()
    .sslContext(sslContext)
    .protocols("TLSv1.2")
    .ciphers("TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384");

This will force your client to communicate over TLSv1.2 and TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 with the server or else it will fail. This setup will also prevent your client to communicate with older protocols such as TLSv1.1 and TLSv1

[ryber]

This looks great. I have a couple other things to work into a release, I'll probably cut it this weekend

[Hakky54]

Thank you very much!

[ryber]

@Hakky54 there was an issue with the GitHub Actions setup for PRs would you mind rebasing your branch with master (or merge master, either way)

[Hakky54]

I just merged your master branch with mine master branch and pushed the changes. Please let me know if something else needs to be done

[ryber]

This is in 3.11.04