chore: move Batcher and Tracker to workspacestats (#13418)

coderd/agentapi/stats.go

@@ -7,8 +7,6 @@ import (
 	"golang.org/x/xerrors"
 	"google.golang.org/protobuf/types/known/durationpb"
 
-	"github.com/google/uuid"
-
 	"cdr.dev/slog"
 	agentproto "github.com/coder/coder/v2/agent/proto"
 	"github.com/coder/coder/v2/coderd/database"
@@ -16,10 +14,6 @@ import (
 	"github.com/coder/coder/v2/coderd/workspacestats"
 )
 
-type StatsBatcher interface {
-	Add(now time.Time, agentID uuid.UUID, templateID uuid.UUID, userID uuid.UUID, workspaceID uuid.UUID, st *agentproto.Stats) error
-}
-
 type StatsAPI struct {
 	AgentFn                   func(context.Context) (database.WorkspaceAgent, error)
 	Database                  database.Store

coderd/agentapi/stats_test.go

@@ -39,7 +39,7 @@ type statsBatcher struct {
 	lastStats       *agentproto.Stats
 }
 
-var _ agentapi.StatsBatcher = &statsBatcher{}
+var _ workspacestats.Batcher = &statsBatcher{}
 
 func (b *statsBatcher) Add(now time.Time, agentID uuid.UUID, templateID uuid.UUID, userID uuid.UUID, workspaceID uuid.UUID, st *agentproto.Stats) error {
 	b.mu.Lock()