add a diff command to diff metadata on file and on server #3126
Description
Add a new command to the CLI which can be used to diff the metadata on the server with one that is available locally.
Usage:
# diff server and migrataions/metadata.yaml
hasura metadata diff
# diff server and <file>
hasura metadata diff --file <file>
# diff <file1> and <file2>
hasura metadata diff --file <file1> --file <file2>
--file flag should have a shorthand of -f
Here is a gist for implementing diff:
https://gist.github.com/shahidhk/f39bf76e5fdf1e7a364638de1d12114b