The main procmacro is not re-exported in the current published releases of esp-hal and esp-hal-embassy

[jessebraham]

There was an unfortunately oversight with the previous release of esp-hal-embassy, in that it does not re-export the esp_hal_procmacros::main macro. Since esp-hal no longer enables the esp-hal-procmacros/embassy feature it's also not exported from this package.

For the time being, workarounds are:

1.) Add esp-hal-procmacros as a direct dependency, with the embassy feature enabled, and import the macro from there
2.) Use the main branch of the repository for both packages, and the issue has been resolved in this branch

@MabezDev @bjoernQ we discussed possibly publishing an interim release of this package, we should discuss this during our meeting on Monday and come to a decision.