Allow use of Homebrew binary built from HEAD #747
Description
Issue To Be Solved
Installing the Flow CLI from Homebrew is the most common installation method on macOS.
brew install flow-cli --HEAD allows building and installing the Flow CLI from master.
It would be helpful to allow the extension to support the resulting binary, because it would allow us and developers to more easily test/QA the latest code of the Flow CLI before tagging a release of it.
The version reported from e.g. flow version --output=json of such a binary is e.g. vHEAD-67da338.