Update killercoda tutorials to use standalone binary

[agardnerIT]

The killercoda scenarios still use Python. Update to use the standalone binary.

Also add text which mentions the other methods and provide links to the docs website.

Killercoda scenarios are here:

• https://github.com/agardnerIT/killercoda_tutorials/tree/main/tracepusherOSS
• https://github.com/agardnerIT/killercoda_tutorials/tree/main/tracepusherDT

[agardnerIT]

All done. I took the opportunity to move away from Jaeger in docker to the self-contained all-in-one binary