docs: global platform event types and custom booking flows (#20940)

* docs: global event types

* docs: custom booking flow

docs/mint.json

@@ -220,7 +220,9 @@
             "platform/guides/replacing-toasts",
             "platform/guides/booking-fields",
             "platform/guides/booking-redirects",
-            "platform/guides/teams-setup"
+            "platform/guides/teams-setup",
+            "platform/guides/global-event-types",
+            "platform/guides/custom-booking-flow"
           ]
         },
         "platform/faq"