Add main application logic and touch handling functionality

- Implemented main application entry point in main.cpp, initializing queues and event groups.
- Created TouchHandler and EInkTouchHandler classes for handling touch events.
- Added a minimal event loop for touch processing in touch.cpp.
- Introduced unit tests for the hello world application in pytest_hello_world.py.
- Added configuration files for CI and Wokwi support.
- Created empty header files for network and UI modules.

main/info/info.cpp

@@ -0,0 +1,30 @@
+#include "info.h"
+
+void display_chip_info() {
+
+  /* Print chip information */
+  esp_chip_info_t chip_info;
+  uint32_t flash_size;
+  esp_chip_info(&chip_info);
+  printf("This is %s chip with %d CPU core(s), %s%s%s%s, ",
+    CONFIG_IDF_TARGET,
+    chip_info.cores,
+    (chip_info.features & CHIP_FEATURE_WIFI_BGN) ? "WiFi/" : "",
+    (chip_info.features & CHIP_FEATURE_BT) ? "BT" : "",
+    (chip_info.features & CHIP_FEATURE_BLE) ? "BLE" : "",
+    (chip_info.features & CHIP_FEATURE_IEEE802154) ? ", 802.15.4 (Zigbee/Thread)" : "");
+
+  unsigned major_rev = chip_info.revision / 100;
+  unsigned minor_rev = chip_info.revision % 100;
+  printf("silicon revision v%d.%d, ", major_rev, minor_rev);
+  if (esp_flash_get_size(NULL, &flash_size) != ESP_OK) {
+    printf("Get flash size failed");
+    return;
+  }
+
+  printf("%" PRIu32 "MB %s flash\n", flash_size / (uint32_t)(1024 * 1024),
+    (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
+
+  printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());
+
+}

main/info/info.h

@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <inttypes.h>
+#include "sdkconfig.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_chip_info.h"
+#include "esp_flash.h"
+#include "esp_system.h"
+
+void display_chip_info();