Imports of ch-insert-lag command

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/ClickHouse/ch-goPackage ch implements ClickHouse client.
github.com/ClickHouse/ch-go/internal/cmd/appPackage app is helper for simple cli apps.
github.com/ClickHouse/ch-go/protoPackage proto implements ClickHouse wire protocol.
github.com/go-faster/errorsPackage errors implements functions to manipulate errors.
go.uber.org/zapPackage zap provides fast, structured, leveled logging.
golang.org/x/sync/errgroupPackage errgroup provides synchronization, error propagation, and Context cancelation for groups of goroutines working on subtasks of a common task.
ioPackage io provides basic interfaces to I/O primitives.
timePackage time provides functionality for measuring and displaying time.