refactor build process, build onefile, upgrade to v2.1.0, add homebrew release

[alexrashed]

This PR contains the following changes:

• It refactors the build process such that:
  • It also creates an ARM64 binary.
  • It creates both, the onefile-binary and the directory-binary distributions.
  • It automatically creates draft releases on tags with the release assets for all supported architectures.
• It adds a new workflow which updates the localstack-cli formula in localstack/homebrew-tap when a draft release is published.
  • There already is a community driven Homebrew formula for LocalStack based on the python packages:
    • https://formulae.brew.sh/formula/localstack
    • https://github.com/Homebrew/homebrew-core/blob/master/Formula/localstack.rb
  • This formula is automatically upgraded and already shows 2.1.0: localstack 2.1.0 Homebrew/homebrew-core#131979
  • In the future, once the binary distribution is final and officially promoted for all systems, we could try to reach out and migrate this formula / automation.
• Fixes the entrypoint discovery for binary distributions (by adding the respective pyinstaller hooks to ensure that the package metadata is added to the package).

[thrau]

nice! looks like a great first iteration :-)

[thrau]

do you think it makes sense to add older/newer versions of linux distros to make sure we have a range of glibc versions covered?

[alexrashed]

Unfortunately, there's no older version than Ubuntu 20.04 and MacOS 11 for GitHub-hosted runners and just ubuntu-latest for buildjet runners. All these runners currently use GCC 10. Binaries compiled with an older GCC version are compatible to newer ones (they are forward-compatible), so choosing the "oldest" available seemed to be the best approach.
Here's the support policy for GitHub Runners: https://github.com/actions/runner-images#software-and-image-support
They basically always support the last three major versions of the GCC toolchain.