feat: add logSender for sending logs on agent v2 API (#12046)

Adds a new subcomponent of the agent for queueing up logs until they can be sent over the Agent API.

Subsequent PR will change the agent to use this instead of the HTTP API for posting logs.

Relates to #10534

codersdk/agentsdk/convert.go

@@ -7,6 +7,7 @@ import (
 	"github.com/google/uuid"
 	"golang.org/x/xerrors"
 	"google.golang.org/protobuf/types/known/durationpb"
+	"google.golang.org/protobuf/types/known/timestamppb"
 
 	"github.com/coder/coder/v2/agent/proto"
 	"github.com/coder/coder/v2/codersdk"
@@ -298,3 +299,15 @@ func ProtoFromAppHealthsRequest(req PostAppHealthsRequest) (*proto.BatchUpdateAp
 	}
 	return pReq, nil
 }
+
+func ProtoFromLog(log Log) (*proto.Log, error) {
+	lvl, ok := proto.Log_Level_value[strings.ToUpper(string(log.Level))]
+	if !ok {
+		return nil, xerrors.Errorf("unknown log level: %s", log.Level)
+	}
+	return &proto.Log{
+		CreatedAt: timestamppb.New(log.CreatedAt),
+		Output:    log.Output,
+		Level:     proto.Log_Level(lvl),
+	}, nil
+}