[Feature] Add the ability to manually add edges through annotations

[hundsdor]

Manually adding edges to the DependencyGraph through annotations, could be useful in case a developer would want to increase safety in certain situations (for example DI) manually.
E.g.:

@DependsOn(RandomClass.class, "randomMethod")
@DependsOnFile("/path/to/random.file")

Adding edges to Types/NonTypes in this way should be quite simple.
Edges to files require more adaptations, since changes to arbitrary files are currently not recognized.