Allow to scape " in lists of macro args

For example:

    PrintMacro : MACRO
        PRINTT \1
    ENDM

        PrintMacro STRCAT(\"Hello\"\,  \" world\\n\")

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>

src/asm/lexer.c

@@ -763,6 +763,9 @@ static uint32_t yylex_MACROARGS(void)
 			case '\\':
 				ch = '\\';
 				break;
+			case '"':
+				ch = '\"';
+				break;
 			case ',':
 				ch = ',';
 				break;