[FEATURE] Make it available as nugget package

[AlmarAubel]

Is your feature request related to a problem? Please describe.
Currently I'm working on a project where we want to analyse the project dependencies. We would like to integrate this package in our console app so we can further analyse the depency graph of dependence. This not possible because Dependensee is currently only available as a dotnet tool in nugget.

Describe the solution you'd like
It would be nice if we could directly add this package to our project instead of using the tool.

Describe alternatives you've considered
Currently we copied this source code into our project. But we would like to directly reference this project and stay up to date.

[madushans]

As a short-term solution, you could also run the tool with -OutputType Json switch which will write a json file. ConsoleJson writes the result to stdout if you don't want to deal with the filesystem.

I can work on taking things apart so the functionality is available as a package, and the dotnet tool can then use the same package as its core.