COMP: fix ftd2xx.lib copy at compile time

On some windows systems, the command cmake -E copy within copy_ftd2xx_static_command renames the ftd2xx.lib file as lib\${BUILD_TYPE} instead of copying it within the directory of the same name. Because of this, the directory can not be created in the future for other libraries, explaining the high number of compilation errors (~50)

Placing a \ at the end of the destination directory should fix this issue.