Add MIME types for video/3gpp and video/3gpp2

[robotmlg]

Feature or enhancement

Proposal:

the audio versions of these containers are already supported

cpython/Lib/mimetypes.py

Lines 527 to 530 in 4b63cd1

	'.3gp' : 'audio/3gpp',
	'.3gpp' : 'audio/3gpp',
	'.3g2' : 'audio/3gpp2',
	'.3gpp2' : 'audio/3gpp2',

the video versions should be too. They are already registered with IANA here: https://www.iana.org/assignments/media-types/media-types.xhtml

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

Issue where those audio/ mimetypes were added #87160

Linked PRs

• gh-122631 Add video/3gpp and video/3gpp2 to mimetypes #122632