fix(language-service): improve outline in embedded graphql

[forivall]

In VSCode, I noticed that the editor sticky scroll headers were showing the wrong headers, and I tracked it down to the GraphQL language support. This also fixes the locations when you navigate to graphql sections using breadcrumbs or the outline panel.

I also emit outlines for all embedded graphql documents, rather than just the first one. This only works properly when the location data is correct (i tried this before fixing the location data, and it lead to some interesting results)

This PR also includes some additional typing and performance improvements, but I saw some mentions of an ongoing refactoring in the commit history, so I have just the targeted changes in a branch: main...forivall:graphiql:outline-embedded-offset-simple

I only added tests for my performance improvement, but let me know if you need more tests!

[changeset-bot]

🦋 Changeset detected

Latest commit: 1f72129

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
graphql-language-service-server	Patch
graphql-language-service	Patch
vscode-graphql	Patch
codemirror-graphql	Patch

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[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: forivall / name: Emily Marigold Klassen (8a9fa96, 0ddeb1b, 2f08429, c88ed43, c2e27d7, 1f72129, 8acf672)

[codecov]

Codecov Report

Attention: Patch coverage is 86.36364% with 9 lines in your changes missing coverage. Please review.

Project coverage is 64.21%. Comparing base (614ff8b) to head (8acf672).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ql-language-service-server/src/MessageProcessor.ts	81.81%	4 Missing ⚠️
...ckages/graphql-language-service/src/utils/Range.ts	83.33%	3 Missing ⚠️
...aphql-language-service/src/interface/getOutline.ts	90.47%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3848      +/-   ##
==========================================
+ Coverage   63.98%   64.21%   +0.22%     
==========================================
  Files          35       35              
  Lines        3088     3124      +36     
  Branches      951      950       -1     
==========================================
+ Hits         1976     2006      +30     
- Misses       1107     1113       +6     
  Partials        5        5              

Files with missing lines	Coverage Δ
...guage-service-server/src/GraphQLLanguageService.ts	87.84% <100.00%> (+0.06%)	⬆️
...aphql-language-service-server/src/parseDocument.ts	100.00% <ø> (ø)
...ql-language-service/src/interface/getDefinition.ts	92.59% <100.00%> (ø)
...aphql-language-service/src/interface/getOutline.ts	76.92% <90.47%> (+3.84%)	⬆️
...ckages/graphql-language-service/src/utils/Range.ts	85.71% <83.33%> (-2.17%)	⬇️
...ql-language-service-server/src/MessageProcessor.ts	88.72% <81.81%> (-0.26%)	⬇️