applied platformio structure

lib/display/CMakeLists.txt

@@ -0,0 +1,16 @@
+# the JPEG library is in ROM but seems to fail randomly (PSRAM issue?)
+set(TJPGD tjpgd)
+
+idf_component_register(SRC_DIRS . core core/ifaces  fonts
+						INCLUDE_DIRS . fonts core
+						REQUIRES platform_config tools esp_common
+						PRIV_REQUIRES services freertos driver ${TJPGD}
+						EMBED_FILES note.jpg )		
+
+if (NOT TJPGD)
+add_compile_definitions(TJPGD_ROM)												
+endif()
+
+set_source_files_properties(display.c
+    PROPERTIES COMPILE_FLAGS
+   -Wno-format-overflow )