[Jobs Match Making] Data models and environment setup

[aldbr]

Description

Get familiar with the project context and build Python data models for job scheduling requirements and node characteristics as described in the matchmaking spec.

YAML examples will be provided by us.

This issue is also about setting up the development environment (pixi workspace with redis-server and Locust) and getting comfortable with the spec.

Definition of Done

• Development environment set up and working (Python and Pixi)
• Python data models for job scheduling requirements and node characteristics, loadable from YAML
• All provided YAML files load successfully and validate (e.g., reject min > max)
• Unit tests for model loading and validation

[aldbr]

devlink42/poc-dirac-job-matchmaking#1