Add programmable Google Search to pytorch tutorials site

[svekars]

This PR implement the Programmable Google Search on the tutorials site. Example search results for FSDP:

cc @brycebortree

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/tutorials/2820

• :page_facing_up: Preview Python docs built from this PR

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:white_check_mark: No Failures

As of commit 65abb979afddef3c5e911993e22a7ebf2b696f39 with merge base 42aaa33c5b8c50c4e6f03b813650d08566139861 (): :green_heart: Looks good so far! There are no failures yet. :green_heart:

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