Moves the check for alldeps/exactdeps switches to the configure() method
along with the other checks.

Raises dnf.cli.CliError instead of dnf.exceptions.Error.

Fixes a bug introduced in bd00c04, where the by_all_deps() arguments
were changed to an array, but in tree_seed() it still passes a single
string.

Untested, I have actually no idea what the code does there, it looks
kind of suspect.

Separates whatrequires and whatdepends handling into two separate code
branches, the original was overly complex, confusing and presented
multiple unnecessary corner cases.

The by_all_deps() arguments now also have a much better defined role.

Uses the new feature of filtering by solvables to properly resolve rich
dependencies for packages. The new code now, along with serching for the
arguments as reldeps, also searches for them as NEVRAs and then looks up
the dependencies for the packages it found.

https://bugzilla.redhat.com/show_bug.cgi?id=1534123
https://bugzilla.redhat.com/show_bug.cgi?id=1698034

…RhBug:1534123,1698034)

To properly list the conflicts, suggests, recommends, enhances and
supplements dependencies of packages defined through provides or even
rich dependencies, it is required to resolve them to packages and query
for them, because that's where the dependencies are defined.

https://bugzilla.redhat.com/show_bug.cgi?id=1534123
https://bugzilla.redhat.com/show_bug.cgi?id=1698034

Add the new types of arguments supported for dependency filtering.