CMakeLists: reorganise the sub-libs.

Magnum's type names are fine, but I'd rather limit what depends on
Magnum as much as possible. Vector types are still allowed, though. No
way I'll write my own.

src/Profile/Profile.cpp

@@ -279,7 +279,7 @@ Profile::setMaterial(MaterialID id, std::int32_t amount) {
     if(it == mats_prop->items.end()) {
         res_prop = new ResourceItemValue;
         if(mats_prop->items.isEmpty()) {
-            res_prop->name.emplace("ResourceMaterial");
+            res_prop->name.emplace(container);
         }
         res_prop->id = id;
         ResourceItemValue::ptr prop{res_prop};