test: move common.ArrayStream to separate module
In a continuing effort to de-monolithize require('../common')
,
move common.ArrayStream
out to a separate module that is
imported only when it is needed.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines