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>

validator_client/src/http_api/tests/keystores.rs

@@ -43,6 +43,8 @@ fn web3signer_validator_with_pubkey(pubkey: PublicKey) -> Web3SignerValidatorReq
         suggested_fee_recipient: None,
         gas_limit: None,
         builder_proposals: None,
+        builder_boost_factor: None,
+        prefer_builder_proposals: None,
         voting_public_key: pubkey,
         url: web3_signer_url(),
         root_certificate_path: None,
@@ -468,7 +470,7 @@ async fn import_and_delete_conflicting_web3_signer_keystores() {
         for pubkey in &pubkeys {
             tester
                 .client
-                .patch_lighthouse_validators(pubkey, Some(false), None, None, None)
+                .patch_lighthouse_validators(pubkey, Some(false), None, None, None, None, None)
                 .await
                 .unwrap();
         }