Enable MyST Markdown docs, port events.rst, refs #2565

docs/events.md

@@ -0,0 +1,14 @@
+(events)=
+# Events
+
+Datasette includes a mechanism for tracking events that occur while the software is running. This is primarily intended to be used by plugins, which can both trigger events and listen for events.
+
+The core Datasette application triggers events when certain things happen. This page describes those events.
+
+Plugins can listen for events using the {ref}`plugin_hook_track_event` plugin hook, which will be called with instances of the following classes - or additional classes {ref}`registered by other plugins <plugin_hook_register_events>`.
+
+```{eval-rst}
+.. automodule:: datasette.events
+    :members:
+    :exclude-members: Event
+```