Add package 'primp' into the RHAI pipeline onboarding collection.

The package requires builder repository onboarding before it can be added to the RHAI pipeline. This ticket is blocked by the builder onboarding ticket.

Summary

`primp` v1.1.2 is a Rust-backed Python HTTP client that builds successfully on x86_64 using maturin/PyO3 with zero runtime Python dependencies and a permissive *MIT license* fully compatible with Red Hat redistribution. The key build consideration is that it *must be built from the full Git repository* (not the PyPI sdist) because it relies on a Cargo workspace with four forked Rust crates patched via `[patch.crates-io]`, which the sdist doesn't properly preserve. *Next step*: clone the v1.1.2 tag, ensure Rust stable (>=1.70), gcc, and cmake are available, then run `maturin build --release` from `crates/primp-python/` to produce the wheel.