Provide support for BOA v1.4 and v1.5 in parallel.

* Project files have been duplicated (vcxproj)
* Compilation for 1.4/1.5 based on compiler -D flags (
* Selection automatically done based on registry keys (vLoadEtasBoaLibrary)
* Installer script updated for CAN_ETAS_BOA_1_4/_1_5

Signed-off-by: Tobias Lorenz <tobias.lorenz@etas.com>