StaticModuleResolver
StaticModuleResolver is often used with no_std in embedded environments
without a file system.
Loads modules that are statically added.
Functions are searched in the global namespace by default.
use rhai::{Module, module_resolvers::StaticModuleResolver};
let module: Module = create_a_module();
let mut resolver = StaticModuleResolver::new();
resolver.insert("my_module", module);
engine.set_module_resolver(resolver);