Add delayed response/debouncing for table filtering

[gkiar]

Scenario

• I have a table with ~100-1000 rows of data, with filterable=True, and plots being rendered based on the visible rows in the table -- in full about ~10-50MB.
• When filtering, say, a percentage column, I toggle the Filter Rows button, and begin typing my query for values of: >90.5.
• Dash issues a state-change and callback for each character, resulting in new figures being sent for >, >9, >90, >90., and >90.5, sending the entire set of figures and data each time.
• Sometimes, this means that my desired filtering never actually gets applied since my app gets stuck handling the previous 4 callbacks.
• This is also a large waste of bandwidth

Ideal outcome

• I would like a debounce option for the DataTable class
• The debounce option would prevent state-update from filtering rows by either:
  • a predefined duration (i.e. 500ms), or
  • a user specified amount of time
• This would prevent multiple callbacks from being triggered during typing, resulting in meaningless or undesired updates
• The debounce option could default to False, so that the standard behaviour is still live-updating, for people who would prefer that for their application.

I'm not a javascript developer (Python, mostly), but will begin to try and tackle this in src/components/DataTable.react.js if there are no developers that can prioritize it. Is there another file/place that I'll need to update (other than the usage.py demonstrating the feature)?

Thanks!
G