RFE: Makefile or equivalent

[bearrito]

Any objection to adding a Makefile or equivalent that covers common tasks? It would be opt-in.

The other Roaring projects don't seem to have this so maybe there is a cultural objection.

[lemire]

The other Roaring projects don't seem to have this so maybe there is a cultural objection.

The roaring64 component still has a Makefile.

We had a Makefile but it was unmaintained and removed.

#406

I am against adding features that are unused. You can always maintain your own makefiles.