For reading, introduce the readFileStream capability that reduces
the overhead of low level file reading by switching to an event based
model.

For writing, try to consume up to N chunks of data from the underlying
source and directly call writeFile if the source is consumed. This will avoid
the overhead of low level file reading for small to medium files.

This reverts commit 956208bb.

Emitters should generally not be reassigned as their corresponding event would also be lost. Marking these as readonly just to enforce this

* 🆙 chokidar@3

* 🆙 chokidar@3.1.0

* update also in remote

* strict init

* more strict props

This reverts commit da5fb7d5.

related to #78602

related to #78168

We seem to use the readonly property way of exposing these values more widely. Standardizing this a bit across the codebase