introduce ui.add_body_html()

nicegui/elements/page.py

@@ -92,3 +92,7 @@ class Page(jp.QuasarPage):
 
 def add_head_html(self, html: str) -> None:
     page_stack[-1].head_html += html
+
+
+def add_body_html(self, html: str) -> None:
+    page_stack[-1].body_html += html

nicegui/ui.py

@@ -33,7 +33,7 @@ class Ui:
     from .elements.notify import Notify as notify
     from .elements.number import Number as number
     from .elements.open import open, open_async
-    from .elements.page import Page as page, add_head_html
+    from .elements.page import Page as page, add_head_html, add_body_html
     from .elements.radio import Radio as radio
     from .elements.row import Row as row
     from .elements.select import Select as select