feat: 添加 i2c_master_messager 组件，集成 BH1750 光照传感器支持

components/i2c_master_messager/include/i2c_master_messager.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "bh1750.h"
+#include "driver/gpio.h"
+#include "driver/i2c_types.h"
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+	i2c_port_num_t i2c_port;
+	gpio_num_t scl_io_num;
+	gpio_num_t sda_io_num;
+	uint16_t read_period_ms;
+	uint8_t bh1750_addr;
+	bh1750_measure_mode_t bh1750_mode;
+} i2c_master_messager_config_t;
+
+typedef struct {
+	float lux;
+	bool valid;
+	int64_t last_update_ms;
+	esp_err_t last_error;
+} i2c_bh1750_data_t;
+
+typedef struct {
+	i2c_bh1750_data_t bh1750;
+} i2c_master_messager_data_t;
+
+#define I2C_MASTER_MESSAGER_MIN_PERIOD_MS (100)
+
+esp_err_t i2c_master_messager_init(const i2c_master_messager_config_t *config);
+esp_err_t i2c_master_messager_start(void);
+esp_err_t i2c_master_messager_stop(void);
+esp_err_t i2c_master_messager_get_data(i2c_master_messager_data_t *out_data);
+esp_err_t i2c_master_messager_deinit(void);
+
+#ifdef __cplusplus
+}
+#endif