[WIP] feat: errors endpoint rust impl for daemon mvtx

[KeranYang]

What this PR does / why we need it

Briefly describe the problem and the solution.

Related issues

Fixes #

Testing

How was this tested (unit/integration/manual)? Include commands, links, or screenshots if applicable.

Special notes for reviewers

Anything notable for review (risk, rollout, follow-ups).

[codecov]

Codecov Report

❌ Patch coverage is 47.21030% with 123 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.67%. Comparing base (bb8775a) to head (cc45666).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
rust/numaflow-daemon/src/runtime/mod.rs	32.58%	60 Missing ⚠️
rust/numaflow-daemon/src/lib.rs	20.00%	36 Missing ⚠️
rust/numaflow-daemon/src/service.rs	72.05%	19 Missing ⚠️
rust/numaflow-daemon/src/api.rs	63.15%	7 Missing ⚠️
rust/numaflow/src/main.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3296      +/-   ##
==========================================
- Coverage   80.98%   80.67%   -0.32%     
==========================================
  Files         316      317       +1     
  Lines       72213    72416     +203     
==========================================
- Hits        58483    58420      -63     
- Misses      13170    13441     +271     
+ Partials      560      555       -5     

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