introduce message prototypes

This introduces message prototypes to applicable API endpoints, which
allows us to invert control of message sending and give the user a
chance to intervene with an interactive ui.

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

cli/init_test.go

@@ -0,0 +1,9 @@
+package cli
+
+import (
+	logging "github.com/ipfs/go-log/v2"
+)
+
+func init() {
+	logging.SetLogLevel("watchdog", "ERROR")
+}