[BUG] Keystore doesn't inject or setup easily for Eigenlayer example

[drewstone]

Overview

Using the keystore in the same way to inject keys does not work well. This should be tested, have examples for, and aim to have a unified flow as any other protocol we're integrating (i.e. Tangle).

[drewstone]

Some things to improve:

• Using the env to inject the right RPCs
• Using the env to maintain keystore paths
• Supporting key generation on the CLI
• Move tests into blueprints themselves
• Make the flows consistent across environments