* op-node: Reduce wait time

* Update op-node/rollup/driver/sequencer.go
Co-authored-by: protolambda <proto@protolambda.com>

* op-node: fix remaining time

* op-node: handle when scheduling is bad

* op-node: improve sequencing scheduling to maximize building time, timeliness and tx inclusion

* op-node: estimate desired delay and sealing mode

* op-node: only re-schedule next sequencing action if head changes
Co-authored-by: protolambda <proto@protolambda.com>