* Remove the `direct-vectoring` feature
* Enables the feature by default
* renames the old direct_vectoring enable function `enable_direct`
* Make enable_direct safe, move it out of vectored module
* enable interrupt preemption by default for riscv
* remove pub from cpu intr handlers
* add enable_direct for Xtensa too
* Fix flip-link feature
* Fix up interrupt docs
* changelog
* fix clippy suggestions
* Disable P4 workflow