doc: add load profile samples to Open Model Thread Group documentation

[vlsi]

Sample documentation:

[codecov-commenter]

Codecov Report

Merging #718 (ab7e663) into master (7548000) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #718      +/-   ##
============================================
- Coverage     55.23%   55.23%   -0.01%     
  Complexity    10381    10381              
============================================
  Files          1062     1062              
  Lines         65760    65760              
  Branches       7533     7533              
============================================
- Hits          36322    36320       -2     
- Misses        26837    26839       +2     
  Partials       2601     2601              

Impacted Files	Coverage Δ
...isualizers/backend/influxdb/HttpMetricsSender.java	78.12% <0.00%> (-2.09%)	⬇️

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[FSchumacher]

Looks good to me. Keep in mind, that I am not a native speaker, too.