Add process lineage

[raubitsj]

Description

From process lineage we can compute which runs are parent and children and siblings of each other. This can be done in wandb-service process, or in the backend or in the UI.. we just need to find who wants this information, possibly the Jobs interface.

Testing

How was this PR tested?

Checklist

• Include reference to internal ticket "Fixes WB-NNNN" (and github issue "Fixes #NNNN" if applicable)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.68%. Comparing base (43e8ead) to head (6caea3b). Report is 2164 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4170      +/-   ##
==========================================
+ Coverage   82.65%   82.68%   +0.03%     
==========================================
  Files         256      256              
  Lines       32541    32553      +12     
==========================================
+ Hits        26896    26916      +20     
+ Misses       5645     5637       -8     

Flag	Coverage Δ
functest	55.99% <100.00%> (+0.02%)	:arrow_up:
unittest	73.42% <100.00%> (+0.08%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
wandb/sdk/interface/interface.py	96.75% <100.00%> (+0.01%)	:arrow_up:
wandb/sdk/wandb_run.py	91.21% <100.00%> (-0.13%)	:arrow_down:

... and 6 files with indirect coverage changes