Add transport mode support for stdio, SSE stability fixes (#13)

Add transport mode support for stdio, SSE stability fixes

internal/logging/logger.go

@@ -0,0 +1,34 @@
+package logger
+
+import (
+	"log"
+)
+
+var isDebug = false
+
+// SetDebug enables or disables debug logging
+func SetDebug(debug bool) {
+	isDebug = debug
+}
+
+// Debug logs a debug-level message
+func Debug(format string, v ...interface{}) {
+	if isDebug {
+		log.Printf("DEBUG: "+format, v...)
+	}
+}
+
+// Info logs an info-level message
+func Info(format string, v ...interface{}) {
+	log.Printf("INFO: "+format, v...)
+}
+
+// Warn logs a warning-level message
+func Warn(format string, v ...interface{}) {
+	log.Printf("WARN: "+format, v...)
+}
+
+// Error logs an error-level message
+func Error(format string, v ...interface{}) {
+	log.Printf("ERROR: "+format, v...)
+}