Libcamera interfaces fix for get_camera

[rasshe]

-Modified get_camera

Fox for behavior:

from vcgencmd import Vcgencmd

vcgm = Vcgencmd()
output = vcgm.version()
output = vcgm.get_camera()
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.11/dist-packages/vcgencmd/vcgencmd.py", line 60, in get_camera
response[j[0].strip()] = j[1].strip()
~^^^
IndexError: list index out of range

Where
vcgencmd get_camera
Returns
supported=1 detected=1, libcamera interfaces=0

After this merge the expected output of the function is:
{'supported': '1', 'detected': '1,', 'libcamera_interfaces': '0'}