remove: Keep cache for the command (RhBug:2237883)

We don't want to remove the stored packages cache after running the `remove` command transaction, therefore we override the `keepcache` option to true.

This is useful for use cases when the previous transaction downloaded a large amount of data, but didn't finished correctly. Then we'd like to fix the system state by removing some problematic package. We don't want to lose our cached data in this case.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2237883

dnf5/commands/remove/remove.cpp

@@ -61,6 +61,7 @@ void RemoveCommand::configure() {
  auto & context = get_context();
  context.set_load_system_repo(true);
  context.set_load_available_repos(Context::LoadAvailableRepos::NONE);
+ context.base.get_config().get_keepcache_option().set(libdnf5::Option::Priority::RUNTIME, true);
 }
 
 void RemoveCommand::run() {