Copied from golang.org/x/talks/content at a07c284b (Feb 8 2021)
and from golang.org/x/tools/cmd/present/static and templates
at 43b469a3 (Nov 17 2021).
Adds 80MB (uncompressed) to the repository and the
cmd/golangorg binary.
Change-Id: I4949e41bf6f3ccc28ea13303d79ed6931abe86e7
Reviewed-on: https://go-review.googlesource.com/c/website/+/365135
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
Russ Cox