[DPE-9443] Switch to ops tracing (14/edge)

[dragomirp]

Switch to ops tracing and remove the old charm libs.

Checklist

• I have added or updated any relevant documentation.
• I have cleaned any remaining cloud resources from my accounts.

[codecov]

Codecov Report

❌ Patch coverage is 36.84211% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.63%. Comparing base (471f506) to head (960f8e9).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/charm.py	33.33%	11 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1470      +/-   ##
==========================================
- Coverage   75.82%   75.63%   -0.19%     
==========================================
  Files          17       17              
  Lines        4430     4445      +15     
  Branches      676      679       +3     
==========================================
+ Hits         3359     3362       +3     
- Misses        838      849      +11     
- Partials      233      234       +1     

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[taurus-forever]

Q: do we need to update documentation here?
It looks like we did relate it differently (using grafana-agent).