fix: replace opendal PrometheusLayer

[Taylor-lagrange]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

Use self implementation of PrometheusMetricsLayer to replace opendal's PrometheusLayer to solve the crash caused by repeated registration of metrics under multiple object_stores ( solve by use lazy_static), and add the opendal_ prefix to the metric.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

Merging #2861 (4aa6064) into develop (6344b1e) will decrease coverage by 0.47%.
Report is 2 commits behind head on develop.
The diff coverage is 38.80%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2861      +/-   ##
===========================================
- Coverage    84.78%   84.32%   -0.47%     
===========================================
  Files          745      746       +1     
  Lines       117025   117635     +610     
===========================================
- Hits         99223    99197      -26     
- Misses       17802    18438     +636     

[killme2008]

LGTM

[zhongzc]

LGTM