Add Fulu boilerplate (#6695)

* Add Fulu boilerplate

* Add more boilerplate

* Change fulu_time to osaka_time

* Merge branch 'unstable' into fulu-boilerplate

* Fix tests

* Merge branch 'unstable' into fulu-boilerplate

* More test fixes

* Apply suggestions

* Remove `get_payload` boilerplate

* Add lightclient fulu types and fix beacon-chain-tests

* Disable Fulu in ef-tests

* Reduce boilerplate for future forks

* Small fixes

* One more fix

* Apply suggestions

* Merge branch 'unstable' into fulu-boilerplate

* Fix lints

consensus/state_processing/src/common/slash_validator.rs

@@ -55,15 +55,12 @@ pub fn slash_validator<E: EthSpec>(
     let whistleblower_index = opt_whistleblower_index.unwrap_or(proposer_index);
     let whistleblower_reward = validator_effective_balance
         .safe_div(spec.whistleblower_reward_quotient_for_state(state))?;
-    let proposer_reward = match state {
-        BeaconState::Base(_) => whistleblower_reward.safe_div(spec.proposer_reward_quotient)?,
-        BeaconState::Altair(_)
-        | BeaconState::Bellatrix(_)
-        | BeaconState::Capella(_)
-        | BeaconState::Deneb(_)
-        | BeaconState::Electra(_) => whistleblower_reward
+    let proposer_reward = if state.fork_name_unchecked().altair_enabled() {
+        whistleblower_reward
             .safe_mul(PROPOSER_WEIGHT)?
-            .safe_div(WEIGHT_DENOMINATOR)?,
+            .safe_div(WEIGHT_DENOMINATOR)?
+    } else {
+        whistleblower_reward.safe_div(spec.proposer_reward_quotient)?
     };
 
     // Ensure the whistleblower index is in the validator registry.