Impl integrity test for runtime (#6356)

* impl integrity test for runtime

* Update frame/support/src/traits.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update frame/support/procedural/src/construct_runtime/mod.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* use thread local

* update doc

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
Co-authored-by: Gavin Wood <gavin@parity.io>