Import: make Model transient to avoid it to be serialized when writing models back

Change-Id: Iebdcb70da52bf0730c863005417bf1df965b9a85
Fix cmake dependencies template

Change-Id: I0cc10875aacae973b0fa0f96e0a8a718cf1c573e
Fix generted pkgconfig file

Change-Id: Ib0db35be32e8e68db7d21567691c1954e65ce624
cpptemplates: Add default constructor with a comment

This way the programmer can known that this code should be fixed
if it does not compile

Change-Id: I9927c7330fba84cc84129910a1ea36fd2ea1fa7e