Add hvPlot Interactive pane

[philippjfr]

Fixes #1824

[jbednar]

Thanks so much!

[codecov]

Codecov Report

Merging #1900 (b166ad9) into master (316ebbc) will decrease coverage by 0.07%.
The diff coverage is 40.54%.

@@            Coverage Diff             @@
##           master    #1900      +/-   ##
==========================================
- Coverage   85.10%   85.02%   -0.08%     
==========================================
  Files         152      152              
  Lines       18814    18883      +69     
==========================================
+ Hits        16011    16056      +45     
- Misses       2803     2827      +24     

Impacted Files	Coverage Δ
panel/pane/holoviews.py	80.26% <35.29%> (-3.63%)	⬇️
panel/pane/__init__.py	100.00% <100.00%> (ø)
panel/tests/pane/test_base.py	88.57% <100.00%> (ø)
panel/tests/test_docs.py	100.00% <100.00%> (ø)
panel/widgets/tables.py	83.90% <0.00%> (+0.03%)	⬆️
panel/tests/widgets/test_tables.py	99.14% <0.00%> (+0.05%)	⬆️
panel/template/base.py	72.77% <0.00%> (+0.07%)	⬆️

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