Add an example of Vowpal Wabbit + AutoGen

[gagb]

Add an example of using VW with AutoGen to showcase agents that adapt using reinforcement learning.

[gagb]

Marco Rossi (@marco-rossi29) olgavrou Qingyun Wu (@qingyun-wu) you all maybe working on similar features and may want to sync up: #522. If there are differences, it maybe a good idea to clarify the differences on the roadmap.

[olgavrou]

Still in draft mode but some initial work of what this might look like can be found here: