Allow per layer tooltips on DeckGL pane

[philippjfr]

No description provided.

[codecov]

Codecov Report

Merging #1846 (927a3f8) into master (7cb7108) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1846   +/-   ##
=======================================
  Coverage   85.08%   85.08%           
=======================================
  Files         152      152           
  Lines       18721    18721           
=======================================
  Hits        15928    15928           
  Misses       2793     2793           

Impacted Files	Coverage Δ
panel/models/deckgl.py	96.42% <100.00%> (ø)

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