test: pepr load test

[btlghrants]

Description

Adds an automation script to run a (reasonably) large set of resources through a given combination of Pepr module / package (.tgz) / image (.tar) within an isolated k3d cluster.

Generates a series of Mem/CPU data points while running & outputs a graph of them as a result.

Related Issue

Relates to #1350

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc) - test

Checklist before merging

• Unit, Journey, E2E Tests, docs, adr added or updated as needed
• Contributor Guide Steps followed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.55%. Comparing base (cdf29b0) to head (6724a2d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1404   +/-   ##
=======================================
  Coverage   78.55%   78.55%           
=======================================
  Files          36       36           
  Lines        1716     1716           
  Branches      410      411    +1     
=======================================
  Hits         1348     1348           
+ Misses        366      339   -27     
- Partials        2       29   +27     

see 7 files with indirect coverage changes

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