feat(logger):color latency

[wsyqn6]

add colored latency to log output based on latency thresholds

Summary

This PR introduces a new function LatencyColor in the logger middleware of the Gin framework. This function assigns colors to log output based on the request latency, improving the readability and visual identification of performance bottlenecks.

Motivation

The current logging system outputs latency as plain text, making it difficult to quickly identify performance issues at a glance. By adding color-coded latency information, developers can more easily distinguish between different latency levels, aiding in faster debugging and performance monitoring.

Changes

1. Add LatencyColor Function: Implement a function that returns a color string based on the request latency.