F rename spark to webex

[urozman]

Use webexteamssdk instead of sparkapi

[annegentle]

Another branch that will need the same changes is the solutions branch, but we can do that after this merges.

[urozman]

I did not test the "CMX Dockerfile" yet. I tried to avoid the repositories that are not part of my scope because I didn't want to create a mess. But I can test it, for sure.

[annegentle]

Yeah, I am okay with you keeping your changes only in the Labs that are getting changes, so I'll just test those changes here. Thanks!

[annegentle]

Merging and @vvaliapa can test next