feat(db): database operations metrics

[kariy]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 78.28947% with 33 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.33%. Comparing base (9bde0ae) to head (c306579).
⚠️ Report is 189 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/storage/db/src/mdbx/mod.rs	28.57%	20 Missing ⚠️
crates/storage/db/src/mdbx/metrics.rs	90.24%	8 Missing ⚠️
crates/storage/db/src/mdbx/tx.rs	88.09%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #367      +/-   ##
==========================================
+ Coverage   73.32%   73.33%   +0.01%     
==========================================
  Files         209      256      +47     
  Lines       23132    32330    +9198     
==========================================
+ Hits        16961    23710    +6749     
- Misses       6171     8620    +2449     

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