Refactor build configuration and add interface delegation generator

[StevenTCramer]

Summary

This PR refactors the build configuration to follow the timewarp-nuru pattern and adds infrastructure for a Delphi-style interface delegation generator (work in progress).

Build System Improvements

• Restructured Directory.Build.props with clear sections and MSBuild variables ($(RepositoryRoot), $(PackagesDirectory), etc.)
• Simplified nuget.config: Removed packageSourceMapping complexity, use artifacts/packages for local feed
• Removed package lock files and related configuration (unnecessary complexity)
• Removed CI deterministic build configuration (not needed)
• Updated csproj files to use $(RepositoryRoot) variable instead of hardcoded relative paths
• Renamed read-me.md → readme.md for consistency
• Use $(Version) variable in Directory.Packages.props for analyzer package reference

Interface Delegation Feature (WIP)

Added infrastructure for Delphi-style interface delegation:

public partial class DataService : ILogger, IDataProcessor<string>
{
    [Implements]
    private readonly ILogger _logger;
    
    [Implements]
    private readonly IDataProcessor<string> _processor;
    
    // Generator automatically creates delegation methods
}

Files Added:

• interface-delegation-attribute.cs - [Implements] attribute definition
• interface-delegation-generator.cs - Source generator (has detection bugs, needs debugging)
• Test files: ILogger, ConsoleLogger, DataService
• Diagnostic rules: TW1001, TW1002, TW1003
• Comprehensive task documentation in kanban/to-do/017_create-interface-delegation-generator/

Configuration Changes

• Test console now uses PackageReference instead of ProjectReference for analyzer package
• Configured GeneratePackageOnBuild in source/Directory.Build.props
• Suppressed RS2001 (not using shipped/unshipped workflow) and NU5128 (expected for analyzer packages)
• Version bumped to 1.0.0-beta.5

Status

The interface delegation generator infrastructure is complete but the member detection logic has bugs and needs debugging before it will work correctly. The build system improvements are ready for review.

Test plan

• Source generator project builds successfully
• Package is generated to artifacts/packages/
• Test console references package correctly
• Version management works with $(Version) variable
• Interface delegation generator detects [Implements] attributes (needs debugging)
• Generator creates delegation methods (blocked by detection issue)

🤖 Generated with Claude Code