Added Rust ERB Templates to SplashKit Translator

[NoahJCross]

File Structure Added

res/translators/rust/
├── splashkit.rs.erb
└── implementation/
    ├── types.rs.erb
    ├── mappers.rs.erb
    ├── functions.rs.erb
    ├── types/
    │   ├── enum.rs.erb
    │   ├── struct.rs.erb
    │   ├── function_pointer.rs.erb
    │   ├── callback.rs.erb
    │   ├── typealias_pointer.rs.erb
    │   └── functions.rs.erb
    └── mappers/
        ├── bool.rs.erb
        ├── char.rs.erb
        ├── direct.rs.erb
        ├── enum.rs.erb
        ├── struct.rs.erb
        ├── vector.rs.erb
        ├── string.rs.erb
        ├── function_pointer.rs.erb
        └── typealias_pointer.rs.erb

Description

This PR adds the ERB templates required for Rust code generation in the SplashKit translator.

Implementation Details

• Main template (splashkit.rs.erb) includes all implementation components
• Complete type system implementation with Rust FFI bindings
• Full mapper system for type conversions between SplashKit and Rust
• Callback handling with thread-safe wrappers
• Complete struct and enum implementations with proper memory management

Template Features

• Follows Rust naming conventions (snake_case for functions, variables, fields)
• Memory safety with reference handling
• Consistent with existing type mappings in rust.rb
• Maintains SplashKit function naming patterns with suffixes

Testing

• Verified against existing translator implementation
• Tested type conversions and FFI boundaries

Related pull request:

splashkit/skm#66