notifier: Add `body_format` as an option

This lets you format the messages through apprise a little nicer

Signed-off-by: Chris Thornton <cwgthornton@gmail.com>

docs/configuration.md

@@ -2343,6 +2343,9 @@ body: "Your printer status has changed to {event_name}"
 #                     is received from Klippy using a gcode_macro.
 #   The default is a body containining the "name" of the notification as entered
 #   in the section header.
+body_format:
+#   The formatting to use for the body, can be `text`, `html` and `markdown`.
+#   The default is `text`.
 title:
 #   The optional title of the notification. This option accepts Jinja2 templates,
 #   the template will receive a context with the same fields as the body.  The

moonraker/components/notifier.py

@@ -182,6 +182,10 @@ class NotifierInstance:
 
         self.title = config.gettemplate("title", None)
         self.body = config.gettemplate("body", None)
+        upper_body_format = config.get("body_format", 'text').upper()
+        if not hasattr(apprise.NotifyFormat, upper_body_format):
+            raise config.error(f"Invalid body_format for {config.get_name()}")
+        self.body_format = getattr(apprise.NotifyFormat, upper_body_format)
         self.events: List[str] = config.getlist("events", separator=",")
         self.apprise.add(self.url)
 
@@ -191,6 +195,7 @@ class NotifierInstance:
             "url": self.config.get("url"),
             "title": self.config.get("title", None),
             "body": self.config.get("body", None),
+            "body_format": self.config.get("body_format", None),
             "events": self.events,
             "attach": self.attach
         }
@@ -251,6 +256,7 @@ class NotifierInstance:
                         attachments.append(str(attach_path))
         await self.apprise.async_notify(
             rendered_body.strip(), rendered_title.strip(),
+            body_format=self.body_format,
             attach=None if not attachments else attachments
         )