Add option to specify ESP-IDF version

[sebastianpsm]

Add option to specify ESP-IDF version

[georgik]

Hi @atanisoft and @sebastianPsm .

I was investigating options on how to make switching of ESP-IDF possible. Unfortunately, GitHub has an official limitation: It's not possible to specify Docker image tag by variable.

However, I found a different approach. It's possible to create branches of GitHub Action and tag them so they match ESP-IDF Docker images tag. Then it's possible to specify in the workflow version as ref.

E.g.:

    - name: esp-idf build
      uses: georgik/esp-idf-ci-action@latest
      with:
        path: 'esp32-s2-hmi-devkit-1/examples/smart-panel'

I've updated the fork of this repo and created few tags like the latest, release-v4.3 and v4.2.1.
Here is the repo: https://github.com/georgik/esp-idf-ci-action

Please, check the solution and let me know your opinion.

One other suggestion was to add a script switch of a branch into the image. This is possible, but for older versions of ESP-IDF it will mean extra download of binaries with tooling which are not present in the latest branch.