Add EZKL as a Framework

[Gonmeso]

Add EZKL integration to the CLI.

This integration brings the following capabilities:

• Perform a transpilation ( setup) using ezkl.
• Create a proof from input data using the outputs of the ezkl transpilation
• Verify the created proof

Other changes:

• New frameworks directory for main logic of each framework
• --framework flag added to differentiate between frameworks, CAIRO its the default option
• Docs updated