new: new -script allows to run JS code to instrument session

session/script.go

@@ -0,0 +1,21 @@
+package session
+
+import (
+	"github.com/evilsocket/islazy/plugin"
+
+	_ "github.com/bettercap/bettercap/js"
+)
+
+type Script struct {
+	*plugin.Plugin
+}
+
+func LoadScript(fileName string, ses *Session) (*Script, error) {
+	if p, err := plugin.Load(fileName); err != nil {
+		return nil, err
+	} else {
+		return &Script{
+			Plugin:  p,
+		}, nil
+	}
+}