[Docs] Add docs for metering enrichment

[martintmk]

Details on the issue fix or feature implementation

Already encountered this multiple times, so better to add docs for metering enrichment.

Confirm the following

• I started this PR by branching from the head of the default branch
• I have targeted the PR to merge into the default branch
• I have included unit tests for the issue/feature
• I have successfully run a local build

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f97143f) 84.56% compared to head (8b77bac) 84.56%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1724   +/-   ##
=======================================
  Coverage   84.56%   84.56%           
=======================================
  Files         307      307           
  Lines        6790     6790           
  Branches     1043     1043           
=======================================
  Hits         5742     5742           
  Misses        839      839           
  Partials      209      209           

Flag	Coverage Δ
linux	84.56% <ø> (ø)
macos	84.56% <ø> (?)
windows	84.56% <ø> (?)

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.