Add charge status monitoring and LED control

- Add LED_0 pin definition and charge status GPIO pin
- Implement charge status monitoring in main loop
- Add LED visual indicators for charging state
- Configure LVGL Montserrat 10 font and set as default
- Reset GPIO pins to clear SPI configurations
- Update COM port to COM14 in VSCode settings

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

main/gpio.h

@@ -4,9 +4,11 @@
 // Define keypad buttons
 #define PIN_NUM_BUTTON_0        36
 #define PIN_NUM_BUTTON_1        39
-#define PIN_NUM_LED_1           32
-#define PIN_NUM_LED_2           33
+#define PIN_NUM_LED_0           32
+#define PIN_NUM_LED_1           33
+#define PIN_NUM_LED_2           25
 #define PIN_NUM_nON				26
+#define PIN_NUM_CHARGE_STATUS   2
 
 
 // Define GPIO pins