Serving layer for sync/async HTTP requests on Numaflow

[vigith]

Summary

We need to build a serving layer (supporting HTTP 1 and 2) on top of the Numaflow engine to support both sync/async endpoints. The serving layer can also optionally run independently without Numaflow pipeline for low-latency endpoints, provided the processing logic is written using Numaflow Map SDK.

Example Use Cases

• Model serving using inference graph (powered by Numaflow DAG) for complex models
• Model execution for proxying traffic to simple models (without Numaflow) but models are interfaced using Numaflow Map SDK.

---

Message from the maintainers:

If you wish to see this enhancement implemented please add a 👍 reaction to this issue! We often sort issues this way to know what to prioritize.

### Tasks
- [ ] https://github.com/numaproj/numaflow/pull/1765
- [ ] https://github.com/numaproj/numaflow/issues/1813
- [ ] https://github.com/numaproj/numaflow/issues/1981
- [x] update servesink to tonic 0.12
- [ ] https://github.com/numaproj/numaflow/issues/1980
- [ ] https://github.com/numaproj/numaflow/issues/1979
- [x] TTL for expiring tracking and store entries
- [ ] https://github.com/numaproj/numaflow/issues/1982
- [ ] https://github.com/numaproj/numaflow/issues/1857
- [ ] use published image in the container creation
- [ ] https://github.com/numaproj/numaflow/issues/1843
- [ ] UI to track messages for Serving
- [ ] https://github.com/numaproj/numaflow/issues/1842
- [ ] https://github.com/numaproj/numaflow/issues/1876
- [ ] integrate with Redis ISB