Examine adding more off-heap vector scoring

This issue has been filed to give consideration to the possibility of adding more off-heap vector scorers.

We recently added a MemorySegment Vector scorer for scoring byte vectors without copying on-heap - scorer loads values directly from the backing memory segment when available. Benchmarks show an approx 2x performance improvement by avoiding copying the vector data on-heap.

#### Floats

Loading vector data from float[] (the fallback), is only supported in JDK 22 - which might be fine. See https://bugs.openjdk.org/browse/JDK-8318678

#### Scalar quantized

Each of the possible quantized vector element sizes can be evaluated separately.
* int7
* int4
* 1 bit ?

relates #13339