Stitch command-line tool

[timoxley]

Following on from https://github.com/sstephenson/stitch/pull/11#issuecomment-1645886

Merging into stitch would probably make sense, though there are some minor conflicts with libs and practices.

Currently we're using different test frameworks (nodeunit vs jasmine); I could easily rewrite the tests or the executable project could simply exist in a different subdirectory.

Perhaps the easiest solution would be the stitchup package becoming a stitch dependency and the stich executable simply acts as a proxy.

[timoxley]

bump

[piranha]

+1

[DAddYE]

+1