Temporarily backport app updates from apps repo

applications/external/i2ctools/i2cscanner.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <furi.h>
+#include <furi_hal.h>
+
+// I2C BUS
+#define I2C_BUS &furi_hal_i2c_handle_external
+#define I2C_TIMEOUT 3
+
+// 7 bits addresses
+#define MAX_I2C_ADDR 0x7F
+
+typedef struct {
+    uint8_t addresses[MAX_I2C_ADDR + 1];
+    uint8_t nb_found;
+    uint8_t menu_index;
+    bool scanned;
+} i2cScanner;
+
+void scan_i2c_bus(i2cScanner* i2c_scanner);
+
+i2cScanner* i2c_scanner_alloc();
+void i2c_scanner_free(i2cScanner* i2c_scanner);