add geyser_plugin_config support for anchor localnet (#2016)

* add geyser_plugin_config support for anchor localnet

* run cargo fmt

* remove duplicate code that came from #2150

Co-authored-by: Tommy Johnson <tommy@psyoptions.io>

CHANGELOG.md

@@ -33,6 +33,7 @@ The minor version will be incremented upon a breaking change and the patch versi
 - lang: Update rust used in the repo version 1.62 ([#2272](https://github.com/coral-xyz/anchor/pull/2272))
 - cli: Allow custom cluster config ([#2271](https://github.com/coral-xyz/anchor/pull/2271)).
 - ts: Add optional flag to parseLogs to throw an error on decoding failure ([#2043](https://github.com/coral-xyz/anchor/pull/2043))
+- cli: Add `test.validator.geyser_plugin_config` support ([#2016](https://github.com/coral-xyz/anchor/pull/2016)).
 
 ### Fixes