HIncrBy missing from HashCmdable

[AvyChanna]

#3305 adds HIncrByFloat but removes the normal HIncrBy, that used int64. This breaks older clients that use UniversalClients.

I don't think this was intentional, since the function still exists. Just the interface is not exposing it anymore.

Expected Behavior

HashCmdable should have HIncrBy like so -

type HashCmdable interface {
	...
	HIncrBy(ctx context.Context, key, field string, incr int64) *IntCmd
	HIncrByFloat(ctx context.Context, key, field string, incr float64) *FloatCmd
	...
}

[ndyakov]

@AvyChanna Thank you for reporting! Looking into this.

[ndyakov]

Fixed by #3344