[FL-2677] SubGhz: region provisioning (#1574)

* FuriHal: region HAL draft
* FuriHal,SubGhz: complete region provisioning.
* Rpc: fix null pointer dereference.
* Cli: device info formatting
* FuriHal: region provisioning fixes and documentation.

firmware/targets/f7/furi_hal/furi_hal.c

@@ -49,6 +49,7 @@ void furi_hal_init() {
     FURI_LOG_I(TAG, "GPIO OK");
 
     furi_hal_version_init();
+    furi_hal_region_init();
 
     furi_hal_spi_init();