Support sslversionandmax argument

[scorriere]

I was looking to specifying a TLS version (basically a minimum TLS version in newer versions of curl) with a max TLS version (-tls-max option in curl). tclcurl supports using 1 or the other inside of the -sslversion option. It is not possible to set both at once with this option. This option sets CURLOPT_SSLVERSION. Unfortunately, libcurl does not support setting the max TLS version in its own option, so it isn't easy to just add another tclcurl option to set this.

https://curl.se/libcurl/c/CURLOPT_SSLVERSION.html

Curl allows us to set both at the same time with a bitwise or operation. I have tested some local changes with adding an option -sslversionandmax to take a 2 element list.

[scorriere]

I'm not really certain how to fix the Mac CI tests because they are failing when installing dependencies. I think the copying of libtcl is the real error here? Should .github./workflows/mac-ci.yml have that step changed to include a -f?

[bovine]

The Mac CI issue has been resolved. I've updated your PR to avoid conflicts from other changes in our master branch.

Do we also need to add another element to optionTable[] for parity with the configTable[]? CURLOPT_SSLVERSION is already present once. https://github.com/flightaware/tclcurl-fa/pull/22/files#diff-a6144812bd1cfbfc5f8bf9742b646862cf6c60f6405d8aec3452eb79de96e1a7L140-L205

[scorriere]

Yeah, it probably should go there? To be honest, it has been 2 years since I have looked at this code and I don't think I fully understood it then.