Port dataviewer feature

[joyceerhl]

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR).
• Title summarizes what is changing.
• Has a news entry file (remember to thank yourself!).
• Appropriate comments and documentation strings in the code.
• Has sufficient logging.
• Has telemetry for enhancements.
• Unit tests & system/integration tests are added/updated.
• Test plan is updated as appropriate.
• package-lock.json has been regenerated by running npm install (if dependencies have changed).
• The wiki is updated with any design decisions/details.

[codecov-io]

Codecov Report

Merging #14435 into release-2020.10 will decrease coverage by 0.21%.
The diff coverage is 29.37%.

@@                 Coverage Diff                 @@
##           release-2020.10   #14435      +/-   ##
===================================================
- Coverage            59.40%   59.19%   -0.22%     
===================================================
  Files                  716      720       +4     
  Lines                39999    40211     +212     
  Branches              5793     5828      +35     
===================================================
+ Hits                 23763    23802      +39     
- Misses               14975    15147     +172     
- Partials              1261     1262       +1     

Impacted Files	Coverage Δ
...cience/data-viewing/jupyterVariableDataProvider.ts	14.00% <0.00%> (ø)
...data-viewing/jupyterVariableDataProviderFactory.ts	50.00% <0.00%> (ø)
...active-common/intellisense/intellisenseProvider.ts	33.24% <0.00%> (ø)
...ience/interactive-common/interactiveWindowTypes.ts	100.00% <ø> (ø)
src/client/datascience/jupyter/jupyterVariables.ts	27.77% <0.00%> (ø)
src/client/datascience/types.ts	100.00% <ø> (ø)
src/client/telemetry/index.ts	80.41% <ø> (ø)
...rc/client/datascience/jupyter/debuggerVariables.ts	8.21% <6.66%> (ø)
.../datascience/interactive-common/interactiveBase.ts	5.93% <16.66%> (+0.15%)	⬆️
...atascience/interactive-common/dataViewerChecker.ts	20.83% <20.83%> (ø)
... and 8 more

---

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
0.0% Duplication

[codecov-commenter]

Codecov Report

❌ Patch coverage is 29.37063% with 101 lines in your changes missing coverage. Please review.
✅ Project coverage is 59%. Comparing base (7f66dc0) to head (47054ec).

Files with missing lines	Patch %	Lines
...rc/client/datascience/jupyter/debuggerVariables.ts	6%	42 Missing ⚠️
...atascience/interactive-common/dataViewerChecker.ts	20%	19 Missing ⚠️
src/client/datascience/commands/commandRegistry.ts	34%	15 Missing ⚠️
...cience/data-viewing/jupyterVariableDataProvider.ts	0%	7 Missing ⚠️
src/client/datascience/jupyter/jupyterVariables.ts	0%	7 Missing ⚠️
.../datascience/interactive-common/interactiveBase.ts	16%	5 Missing ⚠️
src/client/datascience/debugLocationTracker.ts	83%	0 Missing and 4 partials ⚠️
...data-viewing/jupyterVariableDataProviderFactory.ts	0%	1 Missing ⚠️
...active-common/intellisense/intellisenseProvider.ts	0%	1 Missing ⚠️

Additional details and impacted files

@@                Coverage Diff                @@
##           release-2020.10   #14435    +/-   ##
=================================================
- Coverage               59%      59%    -1%     
=================================================
  Files                  716      720     +4     
  Lines                39999    40211   +212     
  Branches              5793     5828    +35     
=================================================
+ Hits                 23763    23802    +39     
- Misses               14975    15147   +172     
- Partials              1261     1262     +1     

Files with missing lines	Coverage Δ
src/client/datascience/constants.ts	99% <100%> (+<1%)	⬆️
...ience/interactive-common/interactiveWindowTypes.ts	100% <ø> (ø)
src/client/datascience/types.ts	100% <ø> (ø)
src/client/telemetry/index.ts	80% <ø> (ø)
...data-viewing/jupyterVariableDataProviderFactory.ts	50% <0%> (ø)
...active-common/intellisense/intellisenseProvider.ts	33% <0%> (ø)
src/client/datascience/debugLocationTracker.ts	76% <83%> (-2%)	⬇️
.../datascience/interactive-common/interactiveBase.ts	5% <16%> (+<1%)	⬆️
...cience/data-viewing/jupyterVariableDataProvider.ts	14% <0%> (ø)
src/client/datascience/jupyter/jupyterVariables.ts	27% <0%> (ø)
... and 3 more

... and 2 files with indirect coverage changes

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