refactoring step 3 - components

squeezelite is a component
platform_esp32 is the main

components/tools/trace.h

@@ -0,0 +1,30 @@
+/* 
+ *  Squeezelite for esp32
+ *
+ *  (c) Sebastien 2019
+ *      Philippe G. 2019, philippe_44@outlook.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+ 
+#pragma once
+
+#ifndef QUOTE
+#define QUOTE(name) #name
+#endif
+
+#define ESP_LOG_DEBUG_EVENT(tag,e) ESP_LOGD(tag,"evt: " e)
+
+