ci(build): major rework GitHub Actions Workflow (#392)

* Rework GitHub Actions Workflow build

* fix name

* attempt to fix matrix

* attempt 2

* fix variant name

* fix upload name

* build webflash

* disable fail-fast

* add flash script from documentation

* fix flash command

* second attempt fix

* patch esp32dev docs

* download assets

* fix yaml anchor

* pack zip artifacts

* fix artifact list