Ordering policy of resource presets

Currently, resource presets are only alphabetically ordered (when requesting a specific set of resource presets by names):

https://github.com/lablup/backend.ai/blob/dec5284b7e836209af657fbf25fa09515fbf4cab/src/ai/backend/manager/models/resource_preset.py#L88

or unordered (when listing all resource presets at once):

https://github.com/lablup/backend.ai/blob/dec5284b7e836209af657fbf25fa09515fbf4cab/src/ai/backend/manager/models/resource_preset.py#L70

Let's add an option to explicitly order them:

- `LEXICOGRAPHIC_ASC`: alphabetically ordered
- `LEXICOGRAPHIC_DESC`: alphabetically reverse-ordered (new)
- `RESOURCE_SIZE_ASC`: smaller resource preset first (new)
- `RESOURCE_SIZE_DESC`: larger resource preset first (new)
To define the relative size of resource presets, we should have a resource slot precedence to make them comparable with each other. Fortunately, we already apply a similar precedence-based ordering when calculating the optimal hardware layouts in the agents as the allocation order config:https://github.com/lablup/backend.ai/blob/dec5284b7e836209af657fbf25fa09515fbf4cab/configs/agent/sample.toml#L286

We also need to add a new, similar shared config option to separately set the resource slot precedence for the UI displays.

JIRA Issue: BA-189