Add x-ms-command-name header support

[dpwatrous]

This can be used to add a friendly name to HTTP requests such as "CreateAccount" or "ScalePool" for debugging/logging purposes.

[codecov]

Codecov Report

Merging #2694 (547e545) into main (1154a4e) will increase coverage by 0.00%.
The diff coverage is 75.00%.

❗ Current head 547e545 differs from pull request most recent head da8fa43. Consider uploading reports for the commit da8fa43 to get more accurate results

@@           Coverage Diff           @@
##             main    #2694   +/-   ##
=======================================
  Coverage   66.18%   66.18%           
=======================================
  Files        1200     1200           
  Lines       33367    33375    +8     
  Branches     6136     6140    +4     
=======================================
+ Hits        22084    22090    +6     
- Misses      11153    11154    +1     
- Partials      130      131    +1     

Impacted Files	Coverage Δ
packages/common/src/ui-common/http/http-client.ts	93.93% <ø> (ø)
...ges/common/src/ui-common/http/fetch-http-client.ts	67.64% <66.66%> (-0.22%)	⬇️
packages/common/src/ui-common/http/constants.ts	100.00% <100.00%> (ø)

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