added: debian packaging control files

This adds skeleton debian packaging (see discussion in OPM land).

There's a few issues with the current setup;
0) i found no version number so i assigned one on random.
1) it's either static or dynamic libs (i.e. not both). this is a cmake pain, i know. not really important. though i wonder why static libs are built by default on linux. it does break the debian standards (shared libs in the libpackage, statics shipped with the -dev package).

2) there is no ABI versioning of the libraries. this is very bad when used as a system library. see the SOVERSION parameter to the add_library macro in CMake. put extremely simple, the ABI number is bumped whenever a change is made in the library that means applications linked against an earlier version won't run properly. this is why you typically see libfoo.so.<somenumber> on linux - somenumber is the major ABI version.