[Issue] Make install scripts install Rosetta 2 if not present on ARM64

[Petermarcu]

Here we mask the fact that its ARM64. When we do that, we need to ensure the emulator is installed:

Here is some sample bash with how it might be done:

    if /usr/bin/pgrep oahd >/dev/null 2>&1; then
        echo "Rosetta is already installed and running. Nothing to do."
    else
        /usr/sbin/softwareupdate –install-rosetta –agree-to-license
       
        if [[ $? -eq 0 ]]; then
        	echo "Rosetta has been successfully installed."
        else
        	echo "Rosetta installation failed!"
        	exitcode=1
        fi
    fi

[rajeshkamal5050]

@danieljurek

Currently, users on M1/M2 see this after a successful azd installation,

rajeshkamal@Rajeshs-MBP ~ % azd
zsh: bad CPU type in executable: azd

Can we fix and enhance docs,

• install-azd.sh and brew scripts to auto-install Rosetta on ARM64, if not found?
• For direct downloads of azd-darwin-amd64.zip. Don't think we can do much here.
• Can we also document as part of https://learn.microsoft.com/en-us/azure/developer/azure-developer-cli/troubleshoot and also in the https://learn.microsoft.com/en-us/azure/developer/azure-developer-cli/install-azd docs

Let us continue discussing here #1314 on the options we have around ARM64(Linux/M1/M2) support.

[rajeshkamal5050]

@danieljurek please take a look at the doc update MicrosoftDocs/azure-dev-docs#1087

Let us also look into if we can get emulator installed during installation.