metrics: Enhance the http metrics middleware

This pull request includes changes to the middleware/metrics.go and middleware/metrics_test.go files to enhance the metrics middleware by adding status code tracking and updating the corresponding tests. The most important changes include adding status code labels, updating the metrics middleware to record status codes, and modifying the tests to validate the new status code metrics.

Enhancements to metrics middleware:

• middleware/metrics.go: Added a new label labelStatus to track HTTP status codes and updated the MetricsMiddleware function to include this label in the metrics.
• middleware/metrics.go: Modified the MetricsMiddleware function to record the status code of each request and include it in the label values.

Updates to tests:

• middleware/metrics_test.go: Added a new route /404 to simulate a 404 error and updated the test cases to include this new route.
• middleware/metrics_test.go: Updated the expected metrics to include new keys for client and server errors, and modified the assertions to check for the new status code label.

v0.8.8

add err body (#242)

v0.8.7

What's Changed

• Support Watch function in redis cache by @carlcarl in #237

Full Changelog: v0.8.6...v0.8.7

v0.8.6

What's Changed

• add option to set prefetch per consumer by @DeimonDB in #234
• go-libs to support redis cluster by @DeimonDB in #235

Full Changelog: v0.8.5...v0.8.6

v0.8.5

What's Changed

• Support prefetch limit per consumer. by @DeimonDB in #232

Full Changelog: v0.8.4...v0.8.5

v0.8.4

What's Changed

• Fix dependency version of logrus_mate by @iCell in #231

Full Changelog: v0.8.3...v0.8.4

Scan method in Redis wrapper

v0.8.3

scan method (#229)

v0.8.2

What's Changed

• Support h2c server by @iCell in #228

Full Changelog: v0.8.1...v0.8.2

v0.8.1

What's Changed

• client: support reading raw HTTP response by @carlcarl in #227

New Contributors

• @carlcarl made their first contribution in #227

Full Changelog: v0.8.0...v0.8.1

v0.8.0

What's Changed

• implement do all by @DeimonDB in #226

Full Changelog: v0.7.9...v0.8.0