Addition/ffi tests

[NoahJCross]

Description

Added a test generation and execution framework for SplashKit that supports all languages. This allows for automated/manual testing for all SplashKit FFI's.

Key features:

• Test definitions in JSON
• Support for sequential and parallel test execution
• Built in handling for cleanup and resource management
• Special handling for manual/interactive tests
• Configurable test groups and individual test cases

Important: If you want to run it with all of the fixes i made to the source and translator you can clone these instead. (The generator uses the source to generate the dll/so/dylib):

• Core: Use NoahJCross/splashkit-core (all-fixes branch)
• Translator: Use NoahJCross/splashkit-translator (all-fixes branch)

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Tests were run using both direct and command-line methods:

ruby main.rb --generate path/to/api.json
ruby main.rb -l rust
ruby main.rb -l rust -g animations 
ruby main.rb -l rust -g animations -t animation_count

ruby main.rb --help # <-- For help

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation