feat: use bigquery-magics package for the %%bigquery magic

[tswast]

Deprecates version of %%bigquery magic in this package.

Note: I keep the implementation intact to reduce disruption for folks that don't install the ipython extras.

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Fixes googleapis/python-bigquery-magics#14
🦕

[chalmerlowe]

LGTM. One minor QUESTION/PREFERENCE.

Approving.

[chalmerlowe]

QUESTION/PREFERENCE:
This issue appears to be closed. I am not clear on what release we need to see from Fiona. This issue was closed on Nov 21, 2021.
They currently claim to require 3.8 and above.
If it is not an issue, I recommend we remove this statement.

Suggested change

	# TODO: Enable 3.10 once there is a geopandas/fiona release.
	# https://github.com/Toblerity/Fiona/issues/1043
	"3.10",

[tswast]

Good catch.