Standard API: replace non-deterministic read_sample with deterministic read_samples

[mrow84]

https://zulip.scrc.uk/#narrow/stream/14-Data/topic/parameter.20file.20semantics/near/16374

• [x] python implementation
• [x] java implementation
• [ ] c++ implementation
• [x] r implementation
• [ ] julia implementation

[github-actions[bot]]

Heads up @mrow84 @bobturneruk - the "data pipeline api" label was applied to this issue.