Patch to make tabulator work offline in jupyter notebook in "pn.config.inline" mode

[pankajp]

• io/notebook.py render_mimebundle defaults to resources=inline when pn.config.inline=True instead of always using cdn
• In this mode, we patch the doc json to replace ImportedStyleSheet with InlineStyleSheet
• io/resources.py patches loading of inlined js file to make require defines work in cases where the define() call has the module name not specified
• layout.ts: watch_stylesheets() makes sure to call "style_redraw()" in case no css link needs to be loaded. This is done after a timeout since some models (eg Tabulator) aren't completely setup when the watch_stylesheets() call is made.

Testing:
In jupyter notebook (I'm using classic notebook):

import panel as pn
print(pn, pn.__version__)
pn.extension('tabulator', 'plotly', inline=True)
import pandas as pd
df = pd.DataFrame({'a':range(10), 'b':[chr(ord('A')+i) for i in range(10)]})
pn.widgets.Tabulator(df)

Fixes #3959
xref: #5167

Note: This is a POC code to share the minimal conceptual changes needed to make panel tabulator work offline in notebook. Took me a while to get this working, so posting it here for review and "inspiration" to get a proper fix in panel, as it seems we have quite a few github issues about problems working offline

[philippjfr]

Thanks for digging into this. I'll have to untangle these changes a little bit.