Migrates DependencyTests to ArchUnit.

[schauder]

Migrates DependencyTests to ArchUnit.

The tests are currently failing due to various undesired dependencies.

The tests start with something like:

	JavaClasses importedClasses = new ClassFileImporter()
	        ...
			.that(onlySpringData())

By adding

			.that(ignorePackage("org.springframework.data.aot.hint"))

or

			.that(ignore(SomeClass.class));

the given classes or packages can be ignored for the analysis. Of course the goal should be to fix the cycles.

[christophstrobl]

I'm curious what's your take on the cycles created by the config, support and util packages? The AOT ones I'd rather skip for now.