Add ability to format bytes as metric or IEC; affects [bundlejs bundlephobia CratesSize DockerSize GithubRepoSize GithubCodeSize GithubSize NpmUnpackedSize SpigetDownloadSize steam VisualStudioAppCenterReleasesSize whatpulse]

Add ability to format bytes as metric or IEC; affects [bundlejs bundlephobia CratesSize DockerSize GithubRepoSize GithubCodeSize GithubSize NpmUnpackedSize SpigetDownloadSize steam VisualStudioAppCenterReleasesSize whatpulse] #807