Add an input to select the host target

[SergioGasquez]

No description provided.

[SergioGasquez]

This is the straight forward approach to allow esp-rs/esp-hal#3065, but it would require some ifs in the yaml as the target triple is different from the runner name.

Maybe we could automate getting the target triple in the action with rustup show | grep "Default host" | sed -e 's/.* //' instead of having an input argument

[SergioGasquez]

Maybe we could automate getting the target triple in the action with rustup show | grep "Default host" | sed -e 's/.* //' instead of having an input argument

Wanted to give this a try, but gh doesn't want me to work

[SergioGasquez]

I will close this in favor of #33, if we prefer this approach, I'll reopen it.