feature request: Support arbitrary / non-compliant Debian repos

[hanzov69]

Issue:
Currently RepoManager expects Debian apt repos to comply with the Debian Repository Format, specifically using a URI structure like apt.domain.com/dists/component

Adding repo that doesn't adhere to this standard is unfortunately impossible, as RepoManager appends /dists/component to the URI

Example:
https://developer.download.nvidia.com/compute/cuda/repos/ <-- does not provide dists
Instead, uses subdirectory of distribution+version (ignoring accepted codename nomenclature), eg:
https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/

They they further break out architecture type, by directory, rather than providing multiple archs in a single directory, eg:

https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/

Feature Request:
Allow RepoManager users to add a noncompliant source repository, that RepoManager will not attempt to append expected URI path to