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/create_validator.rs

@@ -148,6 +148,8 @@ pub async fn create_validators_mnemonic<P: AsRef<Path>, T: 'static + SlotClock,
                 request.suggested_fee_recipient,
                 request.gas_limit,
                 request.builder_proposals,
+                request.builder_boost_factor,
+                request.prefer_builder_proposals,
             )
             .await
             .map_err(|e| {