Improve MacOS installation instructions

• Distinguish between arm64 architecture instead of just using amd64
• Add Homebrew installation method for MacOS users
• Add detailed instructions for handling MacOS security warnings

added 4 commits

• e52ff28e...59209d38 - 3 commits from branch feit-comp90024:master
• 13bbb873 - Merge branch 'master' into 'patch'

Compare with previous version

merged

mentioned in commit b26dc4fa