Please add support for raw f-strings.

>>> import glob
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/lib/glob.py", line 319
SyntaxError: raw f-strings are not supported

It looks like MicroPython did this last year, and it didn't even make the code bigger. micropython#15218

I'll try to apply this patch myself and see if it works, but I might be way out of my depth here.