Add support for configuring plugin yield mechanism, stashing

crates/plugin_runtime/build.rs

@@ -54,13 +54,9 @@ fn main() {
 }
 
 /// Creates a default engine for compiling Wasm.
-/// N.B.: this must create the same `Engine` as
-/// the `create_default_engine` function
-/// in `plugin_runtime/src/plugin.rs`.
 fn create_default_engine() -> Engine {
     let mut config = Config::default();
     config.async_support(true);
-    config.consume_fuel(true);
     Engine::new(&config).expect("Could not create engine")
 }