Add CMakeLists.txt file for ESP-IDF (#603)

CMakeLists.txt

@@ -0,0 +1,17 @@
+set(COMPONENT_SRCDIRS
+    "src"
+)
+
+set(COMPONENT_ADD_INCLUDEDIRS
+    "src"
+)
+
+set(COMPONENT_REQUIRES
+    "arduino-esp32"
+    "AsyncTCP"
+)
+
+register_component()
+
+target_compile_definitions(${COMPONENT_TARGET} PUBLIC -DESP32)
+target_compile_options(${COMPONENT_TARGET} PRIVATE -fno-rtti)