* Clarified comments about the cortex_m::asm::delay functionality in all multiprio.rs examples
* fixed formatting
* Changed to using embassy_time::block_for()
* removed my formatting scripts
* specify embassy_time::Duration
This introduces a `Pender` struct with enum cases for thread-mode, interrupt-mode and
custom callback executors. This avoids calls through function pointers when using only
the thread or interrupt executors. Faster, and friendlier to `cargo-call-stack`.
`embassy-executor` now has `arch-xxx` Cargo features to select the arch and to enable
the builtin executors (thread and interrupt).
