feat(analytics): use Prometheus as source for analytics to display chart

[erka]

closes #2500

[codecov]

Codecov Report

Attention: Patch coverage is 75.47170% with 26 lines in your changes missing coverage. Please review.

Project coverage is 64.31%. Comparing base (f5caa87) to head (7aebad1).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/cmd/grpc.go	0.00%	20 Missing ⚠️
internal/server/analytics/clickhouse/client.go	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3619      +/-   ##
==========================================
+ Coverage   64.14%   64.31%   +0.17%     
==========================================
  Files         169      170       +1     
  Lines       16956    17020      +64     
==========================================
+ Hits        10876    10946      +70     
+ Misses       5400     5395       -5     
+ Partials      680      679       -1     

Flag	Coverage Δ
unittests	64.31% <75.47%> (+0.17%)	⬆️

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[markphelps]

amazing work @erka !! would you mind adding a screenshot to the PR description of how the analytics looks when connected to prometheus with some flag evaluations?

[erka]

@markphelps I have added the screenshots

[markphelps]

amazing work as always @erka !!