net/url: implement encoding.BinaryAppender for URL
For #62384
Change-Id: I61529efe3a59b13606479b74af6cbff61c9efb6e
GitHub-Last-Rev:
f188b91978711c55aa2daf2c72277990d25bc328
GitHub-Pull-Request: golang/go#68763
Reviewed-on: https://go-review.googlesource.com/c/go/+/603815
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>