[Docs] Telemetry page

[martintmk]

Details on the issue fix or feature implementation

Finish the docs for the telemetry by shuffling the content between existing docs.

Contributes to #1091

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

Patch coverage: 100.00% and no project coverage change.

Comparison is base (3f1b435) 83.92% compared to head (a49fdf4) 83.92%.
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1556   +/-   ##
=======================================
  Coverage   83.92%   83.92%           
=======================================
  Files         279      279           
  Lines        6518     6518           
  Branches     1017     1017           
=======================================
  Hits         5470     5470           
  Misses        839      839           
  Partials      209      209           

Flag	Coverage Δ
linux	?
macos	83.92% <100.00%> (ø)
windows	83.92% <100.00%> (ø)

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Files Changed	Coverage Δ
...olly.Extensions/Telemetry/TelemetryListenerImpl.cs	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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