Feature/rework scaffolding

[sebastian-ederer]

Description

The PR reworks the entire scaffolding process to generate code that uses actual Data Annotation Attributes or Fluent API calls instead of spamming .HasAnnotation(...) calls when scaffolding a DbContext.

Related Issues

Type of Change

• Bug fix (non-breaking change adressing an issue)
• New feature (non-breaking change adding functionality)
• Refactoring
• Documentation
• CI / build / tooling
• Breaking change (fix or feature causing existing functionality to change)

Test Plan

• Unit tests added/updated
• Integration tests added/updated (Testcontainers)
• Existing tests pass (dotnet test)

Checklist

• Code follows the project's coding styles and guidelines
• I have updated the documentation accordingly
• I have added tests to cover my changes
• No new compiler warnings introduced
• Public API changes have XML documentation

[codecov]

Codecov Report

❌ Patch coverage is 99.45355% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...sign/Scaffolding/HypertableScaffoldingExtractor.cs	89.65%	3 Missing ⚠️
...c/Eftdb.Design/Scaffolding/ViewDefinitionParser.cs	97.65%	3 Missing ⚠️
src/Eftdb.Design/TimescaleDatabaseModelFactory.cs	86.95%	3 Missing ⚠️

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