cmd/cue: cue mod upload command
This adds an experimental (and perhaps temporary) command
that can be used to upload a module to an OCI registry.
To repeat: this command is EXPERIMENTAL; usage and
name will change in the future.
Signed-off-by: Roger Peppe <rogpeppe@gmail.com>
Change-Id: I5aa976b528a1d7c9ae50335adb15921cdf8e5465
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1171801
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>