* Unify the xtal frequency features for ESP32 and ESP32-C2
* Group and re-organize features for `esp-hal-common`
* Update `esp-hal-smartled` and fix its CI check
* Update `CHANGELOG.md`
* Update feature names in documentation
* No longer publicly expose the `PeripheralClockControl` struct
* Update examples as needed to get things building again
* Update CHANGELOG.md
* Address review feedback, fix a warning
* Use a critical section for all devices other than the ESP32-C6/H2, as they modify multiple registers
* Rebase and update `etm` driver to fix build errors
* Bump MSRV to 1.67, check with `defmt` feature enabled in MSRV checks where applicable
* Add `esp32c6-lp-hal-procmacros` package to VS Code workspace
* Update `CHANGELOG.md`
* Remove the old `pulse_control` driver
* Update `esp-hal-smartled` to use the new `rmt` driver instead
* Update the `hello_rgb` example for each chip
* Update CHANGELOG
* Add README, improve documentation for `esp-hal-procmacros`
* Improve documentation for `esp-hal-smartled`
* Use esp-rs logo for all packages' documentation
* Extract the `esp-hal-smartled` package
This (finally) eliminates the `esp_hal_common::utils` module!
* Remove all references to the old `smartled` feature from CI