Add icons for the key method menu

Thanks to Willy-JL for picking out appropriate icons.

scenes/esubghz_chat_key_menu.c

@@ -81,7 +81,7 @@ void scene_on_enter_key_menu(void* context)
 	menu_add_item(
 		state->menu,
 		"No encryption",
-		NULL,
+		&I_chat_10px,
 		ESubGhzChatKeyMenuItems_NoEncryption,
 		key_menu_cb,
 		state
@@ -89,7 +89,7 @@ void scene_on_enter_key_menu(void* context)
 	menu_add_item(
 		state->menu,
 		"Password",
-		NULL,
+		&I_keyboard_10px,
 		ESubGhzChatKeyMenuItems_Password,
 		key_menu_cb,
 		state
@@ -97,7 +97,7 @@ void scene_on_enter_key_menu(void* context)
 	menu_add_item(
 		state->menu,
 		"Hex Key",
-		NULL,
+		&I_hex_10px,
 		ESubGhzChatKeyMenuItems_HexKey,
 		key_menu_cb,
 		state
@@ -105,7 +105,7 @@ void scene_on_enter_key_menu(void* context)
 	menu_add_item(
 		state->menu,
 		"Generate Key",
-		NULL,
+		&I_u2f_10px,
 		ESubGhzChatKeyMenuItems_GenKey,
 		key_menu_cb,
 		state
@@ -113,7 +113,7 @@ void scene_on_enter_key_menu(void* context)
 	menu_add_item(
 		state->menu,
 		"Read Key from NFC",
-		NULL,
+		&I_Nfc_10px,
 		ESubGhzChatKeyMenuItems_ReadKeyFromNfc,
 		key_menu_cb,
 		state