Bad-KB: allows to go back to script selection and stay connected to the client when using BLE connection mode

firmware/targets/f7/api_symbols.csv

@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,v,13.4,,
+Version,v,13.5,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -1030,6 +1030,7 @@ Function,-,furi_hal_bt_init,void,
 Function,+,furi_hal_bt_is_active,_Bool,
 Function,+,furi_hal_bt_is_alive,_Bool,
 Function,+,furi_hal_bt_is_ble_gatt_gap_supported,_Bool,
+Function,+,furi_hal_bt_is_connected,_Bool,
 Function,+,furi_hal_bt_is_testing_supported,_Bool,
 Function,+,furi_hal_bt_lock_core2,void,
 Function,+,furi_hal_bt_nvm_sram_sem_acquire,void,

firmware/targets/f7/furi_hal/furi_hal_bt.c

@@ -287,6 +287,10 @@ bool furi_hal_bt_is_active() {
     return gap_get_state() > GapStateIdle;
 }
 
+bool furi_hal_bt_is_connected() {
+    return gap_get_state() == GapStateConnected;
+}
+
 void furi_hal_bt_start_advertising() {
     if(gap_get_state() == GapStateIdle) {
         gap_start_advertising();

firmware/targets/furi_hal_include/furi_hal_bt.h

@@ -250,6 +250,8 @@ void furi_hal_bt_set_profile_pairing_method(FuriHalBtProfile profile, GapPairing
 
 GapPairing furi_hal_bt_get_profile_pairing_method(FuriHalBtProfile profile);
 
+bool furi_hal_bt_is_connected(void);
+
 #ifdef __cplusplus
 }
 #endif