Support for semantic tokens in notebooks

[rchiodo]

Fixes #6799

Add support for performing semantic tokenization in the jupyter lsp middleware.

This requires a bunch of other changes too:
microsoft/vscode#135602
microsoft/vscode-python#17836

[codecov-commenter]

Codecov Report

Merging #8001 (93b20e3) into main (02ca34d) will increase coverage by 0%.
The diff coverage is 90%.

@@          Coverage Diff          @@
##            main   #8001   +/-   ##
=====================================
  Coverage     70%     71%           
=====================================
  Files        364     365    +1     
  Lines      22379   22380    +1     
  Branches    3413    3412    -1     
=====================================
+ Hits       15815   15907   +92     
+ Misses      5179    5088   -91     
  Partials    1385    1385           

Impacted Files	Coverage Δ
...atascience/notebook/intellisense/languageServer.ts	71% <0%> (ø)
src/client/datascience/types.ts	100% <ø> (ø)
...ence/notebook/intellisense/intellisenseProvider.ts	88% <94%> (+<1%)	⬆️
...atascience/interactive-window/interactiveWindow.ts	60% <100%> (-1%)	⬇️
...ience/variablesView/variableViewMessageListener.ts	77% <0%> (-23%)	⬇️
.../client/datascience/interactive-window/identity.ts	64% <0%> (-22%)	⬇️
...ent/common/application/webviewViews/webviewView.ts	67% <0%> (-11%)	⬇️
src/client/datascience/webviews/webviewHost.ts	77% <0%> (-2%)	⬇️
...datascience/editor-integration/cellhashprovider.ts	70% <0%> (-1%)	⬇️
... and 37 more