persistent validator settings in validator client (#12354)

* WIP

* improving proposer settings store

* WIP persistent validator settings

* WIP persistent validator settings

* changing visibility level

* fixing some deepsource issues

* fixing more deepsource issues

* fixing json marshalling

* fix linting

* fixing tests

* fixing more tests

* fixing more tests

* fixing more tests

* fixing linting

* WIP fixing unit tests

* fixing remaining db tests

* converting json to protobuf

* fixing e2e

* k8s yaml library is used directly

* fixing linting

* fixing broken unit test

* reverting changes on e2e

* fixing linting

* fixing deepsource issue

* resolving some internal comments

* resolving some comments and adding more tests

* adding more unit tests

* gaz

* fixing flaking test

* fixing unit test contamination

* fixing deepsource issue

* resolving review item

* gaz

go.mod

@@ -91,6 +91,7 @@ require (
 	gopkg.in/d4l3k/messagediff.v1 v1.2.1
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.1
+	k8s.io/apimachinery v0.20.0
 	k8s.io/client-go v0.20.0
 )
 
@@ -233,7 +234,6 @@ require (
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
-	k8s.io/apimachinery v0.20.0 // indirect
 	lukechampine.com/blake3 v1.1.7 // indirect
 	nhooyr.io/websocket v1.8.7 // indirect
 	sigs.k8s.io/structured-merge-diff/v4 v4.0.2 // indirect