add working prompts

[marcomariscal]

"lend x amount of usdc on yield protocol"
"deposit 1 eth on aave"

etc

[aniemerg]

Sagar said he would take the first stab at this

[sgzsh269]

@aniemerg Do those example prompts need to be displayed in the UI?
My thinking was to create a basic guide and add it to the BE repo, the guide would include a link to the widgets.yaml schema file and an example for each widget command.
Let me know what works.

[aniemerg]

A basic guide works