Same output/error handling for all functions

[patrikspiess]

There are differences in the output/error handling for different commands:

• fotoobo fgt get version presents the data in a nice table, even in the case of failure
• fotoobo fmg get version will just print the error (in case of error), even no "Error"-panel

[skftnt]

Create a custom error class that inherits from the built-in Exception class. Would belong in /helpers. (error helper)

class CustomError(Exception):
    def __init__(self, error_message, error_type=None):
        self.error_message = error_message
        self.error_type = error_type

    def __str__(self):
        if self.error_type:
            return f"{self.error_type}: {self.error_message}"
        else:
            return self.error_message

# Example usage
try:
    # Your code that might raise an error
    raise CustomError("Error", "Error")
except CustomError as e:
    print(e)