Expose additional builder booster related flags in the vc (#5086)

* expose builder booster flags in vc, enable options in validator endpoints, update tests

* resolve failing test

* fix issues related to CreateConfig and MoveConfig

* remove unneeded val, change how boost factor flag logic in the vc, add some additional documentation

* fix typos

* fix typos

* assume builder-proosals flag if one of other two vc builder flags are present

* fmt

* typo

* typo

* Fix CLI help text

* Prioritise per validator builder boost configurations over CLI flags.

* Add http test for builder boost factor with process defaults.

* Fix issue with PATCH request

* Add prefer builder proposals

* Add more builder boost factor tests.

---------

Co-authored-by: Mac L <mjladson@pm.me>
Co-authored-by: Jimmy Chen <jchen.tc@gmail.com>
Co-authored-by: Paul Hauner <paul@paulhauner.com>

common/eth2/src/lighthouse_vc/http_client.rs

@@ -483,12 +483,15 @@ impl ValidatorClientHttpClient {
     }
 
     /// `PATCH lighthouse/validators/{validator_pubkey}`
+    #[allow(clippy::too_many_arguments)]
     pub async fn patch_lighthouse_validators(
         &self,
         voting_pubkey: &PublicKeyBytes,
         enabled: Option<bool>,
         gas_limit: Option<u64>,
         builder_proposals: Option<bool>,
+        builder_boost_factor: Option<u64>,
+        prefer_builder_proposals: Option<bool>,
         graffiti: Option<GraffitiString>,
     ) -> Result<(), Error> {
         let mut path = self.server.full.clone();
@@ -505,6 +508,8 @@ impl ValidatorClientHttpClient {
                 enabled,
                 gas_limit,
                 builder_proposals,
+                builder_boost_factor,
+                prefer_builder_proposals,
                 graffiti,
             },
         )