Add example for sendBundle

[mteam88]

See: alloy-rs/alloy#2556, merged 2 weeks ago.

There is currently no documentation or examples on how to use this.

[mteam88]

spun up a quick example for something else I'm working on that involves usage of this:

https://github.com/mteam88/sendblob/blob/master/src/main.rs