Release 32.1.1 does not autocomplete "config set build.options.outputType", accepts arbitrary values

[migrym]

Corteca only supports three values for build.options.outputType: rootfs, oci and docker:

    options:
        # rootfs, produces a compressed root filesystem as the build output; 
        # oci, the output is an OCI image;
        # docker, for docker image output.
        outputType: rootfs

Corteca does not autocomplete the supported values for corteca config set build.options.outputType, and accepts arbitrary values both from the command line and in corteca.yaml, causing corteca build to fail:

oci-poc (main %) $ corteca config get build.options.outputType
rootfs
oci-poc (main %) $ corteca config set build.options.outputType foobar
oci-poc (main *%) $ corteca config get build.options.outputType
foobar
oci-poc (main *%) $ corteca build armv7l
[...]
Fatal error: Unknown image type: foobar