Add support for source based libraries

Is your feature request related to a problem? Please describe.
Our build configuration currently expects all libraries to be pre-compiled.
We should add support for adding a path to a project to be included as a library.

Describe the solution you'd like
Add the option in the JSON file to add a "source library"
During the project config phase, the source libraries are compiled in order into the build folder along with their dependencies
The resulting object files are then linked with the project (statically)
Transitive dependencies are also added to the project
Shared dependencies are added transitively as libraries to the project

Describe alternatives you've considered
An alternative to compiling all libraries beforehand is to add them as source files. The support in the build config is still required regardless of the solution

Start by locating the project configuration phase and the JSON build-configuration handling. Trace how precompiled libraries, dependencies, object files, and static linking are currently represented. Done means a source-library path can be configured, its dependencies compile in order into the build folder, and direct, transitive, and shared dependencies are linked into the project.