These functions detects miniconda and cuda.
Details
detect_conda conducts a test to check whether 1) a miniconda installation and 2) the grafzahl miniconda environment exist.
detect_cuda checks whether cuda is available. If setup_grafzahl was executed with cuda being FALSE, this function will return FALSE. Even if setup_grafzahl was executed with cuda being TRUE but with any factor that can't enable cuda (e.g. no Nvidia GPU, the environment was incorrectly created), this function will also return FALSE.