scripts: Rename dir to bin
Introduce UnitTestTemplate.cpp -- for use with GTest

* CMakeLists.txt: Change NOM_BUILD_TEMPLATES_UNIT from an option to a
variable; this allows us to toggle the variable on/off without
regenerating
the project files.

* tests/CMakeLists.txt: Introduce (optional) compiling
UnitTestTemplate.cpp.
Add UnitTestTemplate.[cpp|hpp] to sublime project file