Add bh1750, aht20, sgp40 drivers unified on native i2c_master API

Forked from managed_components (espressif/bh1750, espressif/aht20,
esp-idf-lib/sgp40) and rewrote aht20/sgp40 internals to use
driver/i2c_master.h directly instead of the i2c_bus and i2cdev
wrapper components, so all three sensors share one create/delete
handle pattern over a single i2c_master_bus_handle_t.

aht20/priv_include/aht20_reg.h

@@ -0,0 +1,24 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+/**
+ * @brief chip information definition
+ */
+#define CHIP_NAME                           "ASAIR AHT20"   /**< chip name */
+#define SUPPLY_VOLTAGE_MIN                  (2.2f)          /**< chip min supply voltage */
+#define SUPPLY_VOLTAGE_MAX                  (5.5f)          /**< chip max supply voltage */
+#define TEMPERATURE_MIN                     (-40.0f)        /**< chip min operating temperature */
+#define TEMPERATURE_MAX                     (125.0f)        /**< chip max operating temperature */
+
+#define AHT20_START_MEASURMENT_CMD          0xAC            /* start measurement command */
+
+#define AT581X_STATUS_CMP_INT               (2)             /* 1 --Out threshold range; 0 --In threshold range */
+#define AT581X_STATUS_Calibration_Enable    (3)             /* 1 --Calibration enable; 0 --Calibration disable */
+#define AT581X_STATUS_CRC_FLAG              (4)             /* 1 --CRC ok; 0 --CRC failed */
+#define AT581X_STATUS_MODE_STATUS           (5)             /* 00 -NOR mode; 01 -CYC mode; 1x --CMD mode */
+#define AT581X_STATUS_BUSY_INDICATION       (7)             /* 1 --Equipment is busy; 0 --Equipment is idle */