Investigate using official actions for drafting a release

[khalidx]

Rather than using the GitHub recommended, although third-party action for drafting a release and uploading files to it in .github/workflows/build.yml, use the default (although archived) actions provided in the actions repository for GitHub Actions:

• https://github.com/actions/create-release
• https://github.com/actions/upload-release-asset

Alternatively, rather than relying on archived actions projects, it seems that a solution can be put together manually based on the options mentioned here:

• How to upload multiple assets? actions/upload-release-asset#28 (comment)
• use wildcards in asset_path actions/upload-release-asset#47 (comment)

For reference on configuring the third-party action mentioned at the start of this issue, see the block below (which on initial test did not work - the step was skipped in the build even though a tag was pushed):

    - name: Draft Release
      # See more information about this step at https://github.com/softprops/action-gh-release
      uses: softprops/action-gh-release@v1
      if: startsWith(github.ref, 'refs/tags/')
      with:
        draft: true
        prerelease: true
        generate_release_notes: true
        fail_on_unmatched_files: true
        files: |
          ./exec/cfs-linux
          ./exec/cfs-macos
          ./exec/cfs-win.exe