File dependencies are not scanned

[Zuplyx]

Currently the plugin does not scan file dependencies. While such dependencies do not have any associated metadata, they usually have a manifest which could be scanned for license information.

I think this could be implemented without too much effort in the ConfigurationReader. Currently we are only iterating over ResolvedDependency here:

Gradle-License-Report/src/main/groovy/com/github/jk1/license/reader/ConfigurationReader.groovy

Line 53 in 232fc7e

for (ResolvedDependency dependency : configuration.resolvedConfiguration.lenientConfiguration.getFirstLevelModuleDependencies()) {

To process file dependencies we would also have to iterate over all dependencies which are an instance of FileCollectionDependency and scan all contained files.

@jk1 What are your thoughts about this? I would be willing to provide a PR for this.