Support "binary vectors": `@JsonFormat(shape = Shape.BINARY)` for `float[]`, `double[]`

[cowtowncoder]

The default method of serializing float[] and double[] is as regular JSON Array with floating-point numbers. But as per:

https://medium.com/@cowtowncoder/super-fast-packed-base64-vectors-dc88cf5253ff

there is a usually MUCH faster-to-process (... and usually more compact too!) representation where in serialization is done by:

• float / double values are converted to their raw binary 32- / 64-bit representations
• these representations are marshalled in Network Byte Order into (logical) byte[]
• that logical byte[] array is Base64-encoded as a JSON String for JSON (and native Binary for formats that support that).

Deserialization then proceeds in the reverse direction.

Configuration for serialization should use @JsonFormat with the usual multi-level configuration:

1. Global configOverrides allow specifying this for all float[] and/or double[] valued properties
2. Per-property @JsonFormat allows choice for specific property.

[cowtowncoder]

note: hoping to get this done for 2.20, either 2.20.0-rc1, or 2.20.0 final.

And similarly for 3.0.0.

[cowtowncoder]

Implementation will be ncluded in 2.20.0.