embed (hidden) tailsql for debugging (#1663)

Signed-off-by: Kristoffer Dalby <kristoffer@dalby.cc>

hscontrol/util/log.go

@@ -1,7 +1,16 @@
 package util
 
-import "github.com/rs/zerolog/log"
+import (
+	"github.com/rs/zerolog/log"
+	"tailscale.com/types/logger"
+)
 
 func LogErr(err error, msg string) {
 	log.Error().Caller().Err(err).Msg(msg)
 }
+
+func TSLogfWrapper() logger.Logf {
+	return func(format string, args ...any) {
+		log.Debug().Caller().Msgf(format, args...)
+	}
+}