* get attesting indices electra impl
* fmt
* get tests to pass
* fmt
* fix some beacon chain tests
* fmt
* fix slasher test
* fmt got me again
* fix more tests
* fix tests
* `superstruct` Attester Fork Variants
* Push a little further
* Deal with Encode / Decode of AttesterSlashing
* not so sure about this..
* Stop Encode/Decode Bounds from Propagating Out
* Tons of Changes..
* More Conversions to AttestationRef
* Add AsReference trait (#15)
* Add AsReference trait
* Fix some snafus
* Got it Compiling! :D
* Got Tests Building
* Get beacon chain tests compiling
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Co-authored-by: Michael Sproul <micsproul@gmail.com>
## Proposed Changes
It's reasonably often that we want to manually convert an attestation to indexed form. This PR adds an `lcli` command for doing this, using an SSZ state and a list of JSON attestations (as extracted from a JSON block) as input.