endpoints: add Zoom endpoint

See #424

Change-Id: I1fa6230082261f60a8e41387ad2bf481df0a1fce
GitHub-Last-Rev: 6fba3dd
GitHub-Pull-Request: #453
Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/271826
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>

Author: sabhiram

endpoints/endpoints.go

@@ -197,6 +197,12 @@ var Yandex = oauth2.Endpoint{
 	TokenURL: "https://oauth.yandex.com/token",
 }
 
+// Zoom is the endpoint for Zoom.
+var Zoom = oauth2.Endpoint{
+	AuthURL:  "https://zoom.us/oauth/authorize",
+	TokenURL: "https://zoom.us/oauth/token",
+}
+
 // AzureAD returns a new oauth2.Endpoint for the given tenant at Azure Active Directory.
 // If tenant is empty, it uses the tenant called `common`.
 //