The previous implementation used a single global QuestionCollection
for all commands, leading to an unstructured directory and unclear
responsibilities.

This change:
- Reorganizes question classes into sub-directories by domain.
- Introduces specific QuestionCollection services for each command.
- Updates Services.yaml to inject only the required collections into
  each command.
- Improves autowiring and tagging by using domain-specific tags
  for question registration.

This ensures that commands only have access to the questions they
actually need and improves the overall project structure.