Add putAll() function

[phillmac]

When putting bulk amounts of documents, the oplog quickly grows unmanageable if every single document put generates a corresponding oplog PUT entry. This PR aims to fix this performance cost by batching large volumes of documents into a single PUTALL oplog entry.

put vs putall performance: https://gist.github.com/phillmac/155ed1eb232e75fda4a793e7672460fd

Includes some style fixes from standard --fix

[aphelionz]

I'd like to see if this compatible with @vasa-develop's b-tree work

[phillmac]

Sure, I can run a merge test and see what happens, if someone could point me to the b-tree implementation

[vasa-develop]

@phillmac Here is the commit for b-tree with aviondb

All the b-tree stuff is in the src/CollectionIndex.js

It's pretty basic.