feat(words): added bevfusion and extrinsics

[knzo25]

Description

Adding bevfusion and extrinsics to the dict.
intrinsics was already in the dict to I think it would be ok for extrinsics to be as well.
bevfusion is a camera-lidar object detector (https://arxiv.org/abs/2205.13542)

Related links

Parent Issue/PR:
Needed for

• PR

Links to the definitions of the words added:

• bevfusion: https://arxiv.org/abs/2205.13542
• extrinsics: https://www.merriam-webster.com/dictionary/extrinsic#:~:text=extrinsic%2C%20extraneous%2C%20foreign%2C%20alien,derived%20from%20its%20essential%20nature.

Notes for reviewers

None.

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