feat(state): add from, to ids for edge

[igorwessel]

📑 Summary

This PR reintroduces FROM-TO id in Edges.

#5503

📏 Design Decisions

I am currently working on converting state diagram to Excalidraw, and I felt the need to have an easier way to find the edges.

I tried some alternative paths but without success, for example:

1. Manually tracking each edge, and using it as an index to search in .edgePaths, however, the index does not always reflect how we iterate through the parser.doc.
2. Using the respective graphCount id to get the edge, but in cases where we have multiple relationships for the same state, it may not find the correct edge because we do not have access to the graphCount in the parser.doc, only to the node id.

📋 Tasks

Make sure you

• 📖 have read the contribution guidelines
• 💻 have added necessary unit/e2e tests.
• 📓 have added documentation. Make sure MERMAID_RELEASE_VERSION is used for all new features.
• 🔖 targeted develop branch

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.

Project coverage is 4.49%. Comparing base (c8ce416) to head (6f01969).

Files with missing lines	Patch %	Lines
...rc/rendering-util/layout-algorithms/dagre/index.js	0.00%	10 Missing ⚠️
packages/mermaid/src/diagrams/state/dataFetcher.js	0.00%	6 Missing ⚠️
packages/mermaid/src/utils.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #6039   +/-   ##
=======================================
  Coverage     4.49%   4.49%           
=======================================
  Files          383     382    -1     
  Lines        53925   53925           
  Branches       596     621   +25     
=======================================
  Hits          2425    2425           
  Misses       51500   51500           

Flag	Coverage Δ
unit	4.49% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
packages/mermaid/src/utils.ts	41.98% <0.00%> (ø)
packages/mermaid/src/diagrams/state/dataFetcher.js	0.00% <0.00%> (ø)
...rc/rendering-util/layout-algorithms/dagre/index.js	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No changes detected	-	Nov 8, 2024, 2:29 PM