Remove use of committee list from validator client (#15039)

* wip

* fixing unit tests

* changing is aggregator function

* wip

* fully removing the use of committee from validator client, adding a wrapper type for duties

* fixing tests

* fixing linting

* fixing more tests

* changelog

* adding some more tests

* Update proto/prysm/v1alpha1/validator.go

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* radek's feedback

* removing accidently checked in

---------

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

proto/prysm/v1alpha1/BUILD.bazel

@@ -342,6 +342,7 @@ go_library(
         "eip_7521.go",
         "sync_committee_mainnet.go",
         "sync_committee_minimal.go",  # keep
+        "validator.go",
         ":ssz_generated_altair",  # keep
         ":ssz_generated_bellatrix",  # keep
         ":ssz_generated_capella",  # keep

proto/prysm/v1alpha1/validator.go

@@ -0,0 +1,25 @@
+package eth
+
+import (
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+)
+
+// ValidatorDutiesContainer is a wrapper that can be both used for the gRPC DutiesResponse and Rest API response structs for attestation, proposer, and sync duties.
+type ValidatorDutiesContainer struct {
+	CurrentEpochDuties []*ValidatorDuty
+	NextEpochDuties    []*ValidatorDuty
+}
+
+// ValidatorDuty is all the information needed to execute validator duties
+type ValidatorDuty struct {
+	CommitteeLength         uint64
+	CommitteeIndex          primitives.CommitteeIndex
+	CommitteesAtSlot        uint64
+	ValidatorCommitteeIndex uint64
+	AttesterSlot            primitives.Slot
+	ProposerSlots           []primitives.Slot
+	PublicKey               []byte
+	Status                  ValidatorStatus
+	ValidatorIndex          primitives.ValidatorIndex
+	IsSyncCommittee         bool
+}