Support eigenlayer version command

[shrimalmadhur]

Is your feature request related to a problem? Please describe.
Right now when we have the binary installed we don't have a way to see the version of binary.

Describe the solution you'd like
I want a command like eigenlayer version or eigenlayer --version so that I can check what binary I am using

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.