bootstrap: add bootstrap step to run intrinsic-test in CI

[xonx4l]

This PR ports library/stdarch/crates/intrinsic-test crate into the bootstrap test runner as a step, so that we can run the intrinsic-test suite via x.py test.

Changes -:
Ports intrinsic-test from the stdarch crate into the bootstrap system as a new test step so it runs inside the existing
x86_64-gnu and aarch64-gnu CI jobs .
Added intrinsic-test in src/bootstrap/src/core/build_steps/test.rs .
Registers intrinsic-test as a bootstrap tool in tool.rs .
Installs clang, lld, and Intel SDE in the respective Dockerfiles.

r? @Kobzol

[rustbot]

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