What would you like to be added:

Currentlt kmesh has no metrics, accesslogs or traces at all. All of these are demanding features for a mesh. I would propose we support it in kmesh.

For Kmesh L4:

• Accesslog, metrics should be emitted from bpf prog -- @LiZhenCheng9527 @lec-bit
• Support promethues scratch -- @LiZhenCheng9527 @lec-bit

Supoport L7, all are emitted from waypoint, since we are based on istio proxy. Need to have a double check, what is missing and align with upstream

• Access log: - @YaoZengzeng
• Metrics: - @YaoZengzeng
• Traces: - @YaoZengzeng

Expect to have some use guide on obsevability