Modernize Codebase to Rust 2024 and Fix Critical CDT Issues

[virtualritz]

TLDR; This PR improves stability and maintainability of Foxtrot while bringing it up to current Rust ecosystem standards.

Rust 2024 Edition

• Updated entire workspace from Rust 2021 to Rust 2024 edition.
• Fixed all compilation warnings (220+ lifetime elision warnings, 43+ dead code warnings).
• Applied rustfmt and clippy fixes across all crates.
• Updated all dependencies to latest compatible versions.

GUI/Rendering

• Migrated to wgpu v26 and winit v0.30 APIs.
• Replaced winit event loop with ApplicationHandler trait.
• Updated WGSL shaders from [[attributes]] to @attributes syntax.
• Fixed Surface lifetime management with Arc.
• Handle empty meshes gracefully with early exit and clear error messages.

Bug Fixes

• Fixed panic in cdt triangulation when processing complex models (e.g., Raspberry Pi 4 STEP file).
• Replaced assertions with proper error handling using new Error::HullMismatch variant.
• Added test cases for problematic cdt input that was causing crashes.
• Fixed buffer panics when models have no vertices or triangles.

Detailed Changes

Express Parser Improvements

• Fixed nom 7 API compatibility (fold_many0/fold_many1 now use closures).
• Resolved lifetime issues in alias macro for proper IResult usage.
• Applied clippy recommendations (renamed methods, removed redundant closures).

Code Quality

• Renamed parallel feature to rayon and enabled by default.
• Renamed structs to comply with Rust API naming guidelines (RFC 430).
• Applied cargo-sort for consistent dependency ordering.

cdt Improvements

• Merged PR #14 adding test cases for problematic triangulation input.
• Fixed assertions that would panic on malformed hull structures.
• Errors are now properly propagated instead of causing crashes.

Testing

• All existing tests pass.
• New test cases added for problematic cdt scenarios.
• Successfully loads and displays complex STEP files that previously crashed.