feat: change direction of erDiagram

[demonsgalore]

📑 Summary

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Resolves #

📏 Design Decisions

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📋 Tasks

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• 📖 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 9 lines in your changes missing coverage. Please review.

Project coverage is 5.73%. Comparing base (d6ccd93) to head (c6191b1).
Report is 167 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #5559      +/-   ##
==========================================
- Coverage     5.73%   5.73%   -0.01%     
==========================================
  Files          278     278              
  Lines        41999   42007       +8     
  Branches       490     490              
==========================================
  Hits          2409    2409              
- Misses       39590   39598       +8     

Flag	Coverage Δ
unit	5.73% <0.00%> (-0.01%)	⬇️

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

Files	Coverage Δ
packages/mermaid/src/diagrams/er/erRenderer.js	0.00% <0.00%> (ø)
packages/mermaid/src/diagrams/er/erDb.js	0.00% <0.00%> (ø)