Plugins
Rhai contains a robust plugin system that greatly simplifies registration of custom functionality.
Instead of using the complicated Engine::register_XXX or Module API to register Rust functions,
a plugin simplifies the work of creating and registering new functionality in an Engine.
Plugins are processed via a set of procedural macros under the rhai::plugin module. These allow
registering Rust functions directly in the Engine, or adding Rust modules as packages.
There are two types of plugins: