Add support for markdown-style links

[ryanwjackson]

📑 Summary

Add support for markdown-style links on line messages and notes

Resolves #1279

📏 Design Decisions

This currently only affects line messages and notes on sequence diagrams

📋 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.
• 🦋 If your PR makes a change that should be noted in one or more packages' changelogs, generate a changeset by running pnpm changeset and following the prompts. Changesets that add features should be minor and those that fix bugs should be patch. Please prefix changeset messages with feat:, fix:, or chore:.

[changeset-bot]

🦋 Changeset detected

Latest commit: c69c21d

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

This PR includes changesets to release 1 package

Name	Type
mermaid	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

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[pkg-pr-new]

Open in Stackblitz

npm i https://pkg.pr.new/mermaid-js/mermaid/@mermaid-js/mermaid-zenuml@6158

npm i https://pkg.pr.new/mermaid-js/mermaid@6158

npm i https://pkg.pr.new/mermaid-js/mermaid/@mermaid-js/parser@6158

npm i https://pkg.pr.new/mermaid-js/mermaid/@mermaid-js/layout-elk@6158

commit: c69c21d

[codecov]

Codecov Report

Attention: Patch coverage is 10.86957% with 82 lines in your changes missing coverage. Please review.

Project coverage is 4.49%. Comparing base (df636c6) to head (c69c21d).

Files with missing lines	Patch %	Lines
packages/mermaid/src/diagrams/sequence/svgDraw.js	0.00%	78 Missing ⚠️
packages/mermaid/src/diagrams/sequence/styles.js	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #6158      +/-   ##
==========================================
+ Coverage     4.48%   4.49%   +0.01%     
==========================================
  Files          383     383              
  Lines        54038   54125      +87     
  Branches       596     596              
==========================================
+ Hits          2425    2435      +10     
- Misses       51613   51690      +77     

Flag	Coverage Δ
unit	4.49% <10.86%> (+0.01%)	⬆️

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

Files with missing lines	Coverage Δ
packages/mermaid/src/diagrams/common/common.ts	54.21% <100.00%> (+1.20%)	⬆️
packages/mermaid/src/diagrams/sequence/styles.js	0.00% <0.00%> (ø)
packages/mermaid/src/diagrams/sequence/svgDraw.js	0.00% <0.00%> (ø)