chore(conf) update lv_conf_template.h with demos

lv_conf_template.h

@@ -618,6 +618,35 @@
 /*Enable the examples to be built with the library*/
 #define LV_BUILD_EXAMPLES 1
 
+/*===================
+ * DEMO USAGE
+ ====================*/
+
+/*Show some widget*/
+#define LV_USE_DEMO_WIDGETS        1
+#if LV_USE_DEMO_WIDGETS
+#define LV_DEMO_WIDGETS_SLIDESHOW  0
+#endif
+
+/*Demonstrate the usage of encoder and keyboard*/
+#define LV_USE_DEMO_KEYPAD_AND_ENCODER     1
+
+/*Benchmark your system*/
+#define LV_USE_DEMO_BENCHMARK   1
+
+/*Stress test for LVGL*/
+#define LV_USE_DEMO_STRESS      1
+
+/*Music player demo*/
+#define LV_USE_DEMO_MUSIC       1
+#if LV_USE_DEMO_MUSIC
+# define LV_DEMO_MUSIC_SQUARE       0
+# define LV_DEMO_MUSIC_LANDSCAPE    0
+# define LV_DEMO_MUSIC_ROUND        0
+# define LV_DEMO_MUSIC_LARGE        0
+# define LV_DEMO_MUSIC_AUTO_PLAY    0
+#endif
+
 /*--END OF LV_CONF_H--*/
 
 #endif /*LV_CONF_H*/