gstreamer1.0-python: do not supply unknown g-i options

meson 0.60 turns unknown options into them hard errors, so instead of relying on g-i class
(where the options are mandatory) add g-i dependencies explicitly.

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>