Reworked Fusion Metadata

[michaelstaib]

This PR will introduce:

• new fusion graph configuration format
• new metadata schema
• removes dependency of HotChocolate from fusion
• allows for AOT compilation of the gateway
• introduces new query planner

[glen-84]

Can be removed.

[michaelstaib]

Well spotted! I renamed the project.

[codecov]

Codecov Report

Attention: Patch coverage is 16.66667% with 5 lines in your changes missing coverage. Please review.

Project coverage is 73.33%. Comparing base (492c853) to head (fb4213f).
Report is 24 commits behind head on main.

Files	Patch %	Lines
...rc/Language.SyntaxTree/ScalarTypeDefinitionNode.cs	0.00%	4 Missing ⚠️
...ning/RequestFormatters/RequestDocumentFormatter.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7363      +/-   ##
==========================================
- Coverage   77.13%   73.33%   -3.81%     
==========================================
  Files        2474     2787     +313     
  Lines      122758   139155   +16397     
==========================================
+ Hits        94687   102044    +7357     
- Misses      28071    37111    +9040     

Flag	Coverage Δ
unittests	73.33% <16.66%> (-3.81%)	⬇️

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