Add clickstream example table for funnel analysis

[xiangfu0]

Add a simple clickstream example table for testing funnel functions in Quickstart.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.00%. Comparing base (59551e4) to head (82a3644).
Report is 616 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #13379      +/-   ##
============================================
+ Coverage     61.75%   62.00%   +0.24%     
+ Complexity      207      198       -9     
============================================
  Files          2436     2550     +114     
  Lines        133233   140257    +7024     
  Branches      20636    21801    +1165     
============================================
+ Hits          82274    86960    +4686     
- Misses        44911    46702    +1791     
- Partials       6048     6595     +547     

Flag	Coverage Δ
custom-integration1	<0.01% <ø> (-0.01%)	⬇️
integration	<0.01% <ø> (-0.01%)	⬇️
integration1	<0.01% <ø> (-0.01%)	⬇️
integration2	0.00% <ø> (ø)
java-11	61.95% <ø> (+0.24%)	⬆️
java-21	61.89% <ø> (+0.26%)	⬆️
skip-bytebuffers-false	61.99% <ø> (+0.24%)	⬆️
skip-bytebuffers-true	61.86% <ø> (+34.14%)	⬆️
temurin	62.00% <ø> (+0.24%)	⬆️
unittests	61.99% <ø> (+0.24%)	⬆️
unittests1	46.57% <ø> (-0.33%)	⬇️
unittests2	27.66% <ø> (-0.07%)	⬇️

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