[NEOS-1577] Auto-generate CLI Config JSON Schema

[nickzelei]

Would be awesome if we could have an auto-generated via go generate JSON schema for the CLI config yaml struct.

cmdConfig - https://github.com/nucleuscloud/neosync/blob/main/cli/internal/cmds/neosync/sync/sync.go#L76

I think we will need to add json tags to the struct, but then we could use https://github.com/invopop/jsonschema to generate one and have it committed into the repo. This would be great for folks to add further validation to their configs.

_{From SyncLinear.com | NEOS-1577}