slurmdbd: Rework Job API

[tazend]

Classes

• [x] Job class providing read-only access to all possible members slurmdb_job_rec_t
• [x] Jobs class, acting as a custom collection (dict) to retrieve actual job-information, and holds all the Job instances which carry the information.
• [x] JobStep class providing read-only access to all possible members of slurmdb_job_rec_t
• [x] JobSteps class, acting as custom collection (dict) to hold all the 'JobStep' instances
• [x] JobSearchFilter class acting as a wrapper around slurmdb_job_cond_t to search for jobs matching specific conditions.

General Functionality for a Job

• [x] modify

Other

• [x] Documentation
• [x] Write tests
• [x] Write examples

[multimeric]

Looks good. I'm also interested in the step statistics, but that can be added later as a subsequent PR if necessary. If you open this as a draft PR and I can review if/when you'd like.

[tazend]

Hi @multimeric

yeah the basic layout for everything is now pretty much done, including step statistics - just need to parse everything properly now. I'll let you know when its ready :)

[multimeric]

Great! Please open as a draft PR though so it can be reviewed.

[tazend]

Done, last missing functionality to modify database Jobs was now added with #297