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Adds `@dynamo_worker(static = True)` to create a static worker which has a predictable name and hence does not require discovery or `etcd` to be running. There can only be a single static worker per namespace / component / endpoint trio.

This contrasts with the default dynamic `dynamo_worker` endpoints we have now, which get a unique random name (based on namespace/component/endpoint), and are discovered by ingress components using etcd.

Also change the hello_world example to use `dynamo_worker(static = True)` so that it is exercised and demonstrated somewhere.

For NIM.

This makes the Rust parts all use ring / rustls library instead of local install of openssl. It's a step on the journey to being statically linked.

Pieces:
- `tokenizers` and `mistralrs` now support rustls (mistralrs by default, tokenizers with feature flag).
- Move shared dependencies up into workspace
- New `rand` crate has some renames for future rust
- Ensure the dependency doesn't creep back in by enforcing it with cargo deny.

Co-authored-by: Harrison King Saturley-Hall <hsaturleyhal@nvidia.com>

Replaces hard-coded "kv-hit-rate" string in multiple places with KV_HIT_RATE_SUBJECT constant in lib/llm.

Co-authored-by: aflowers <aflowers@nvidia.com>

Signed-off-by: Neelay Shah <neelays@nvidia.com>
Co-authored-by: Ryan McCormick <rmccormick@nvidia.com>