Create a file or text environment variable.
appcircle build variable create [options]
$ appcircle build variable create --variableGroupId "Variable Group ID" --type "text" --key "Key Name" --value "Key Value" --isSecret true
$ appcircle build variable create --variableGroupId "Variable Group ID" --type "file" --key "Key Name" --filePath "File Path"
--variableGroupId <uuid> Variable Group ID
--type <string> Type [file, text]
--isSecret <boolean> Secret
--key <string> Key Name
--value <string> Key Value
--filePath <string> File Path
--help Show help for command