feat: add libp2p tracing metrics and server-timing headers #166

[shobit000]

Title

feat: add libp2p tracing metrics and expose via server-timing headers

Description

This PR integrates libp2p tracing metrics into the project and exposes these metrics via server-timing headers. It addresses the need for improved observability and performance monitoring. The changes include:

• Adding @libp2p/opentelemetry-metrics to dependencies.

• Initializing tracing metrics in libp2p-defaults.ts and libp2p-defaults.browser.ts.

• Creating a new server.ts file to handle HTTP requests and expose server-timing headers.

Fixes [https://github.com//issues/166]

Notes & open questions

• Ensure that the new tracing metrics do not introduce significant overhead.

• Verify that the server-timing headers are correctly exposed in all relevant responses.

Change checklist

• I have performed a self-review of my own code

• I have made corresponding changes to the documentation if necessary (this includes comments as well)

• I have added tests that prove my fix is effective or that my feature works

[2color]

This looks like spam.

[shobit000]

why ??