This also adds a `fetchinvoice-noconnect` option to suppress it too.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-EXPERIMENTAL: `fetchinvoice` and `sendinvoice` will connect directly if they can't find an onionmessage route.
Fixes: #4624
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: doc: Epic documentation rewrite: each now lists complete and accurate JSON output, tested against testsuite.