docs: update outdated "native assets" terminology

Author: GregoryConrad

README.md

@@ -6,7 +6,7 @@
 
 ---
 
-Rust support for Dart's Native Assets.
+Rust support for Dart's [build hooks](https://dart.dev/tools/hooks).
 
 ## Why native_toolchain_rust?
 1. It's opinionated.

native_toolchain_rust/lib/src/build_runner.dart

@@ -36,14 +36,14 @@ interface class RustBuildRunner {
     required List<AssetRouting> assetRouting,
   }) async {
     logger
-      ..info('Starting build of Rust native assets')
+      ..info('Starting build of Rust code assets')
       ..config(input)
       ..config(Platform.environment);
 
     if (!input.config.buildCodeAssets) {
       logger.info(
         'buildCodeAssets is false; '
-        'skipping build of Rust native assets',
+        'skipping build of Rust code assets',
       );
       return;
     }

native_toolchain_rust/pubspec.yaml

@@ -1,6 +1,6 @@
 name: native_toolchain_rust
 description: >
-  Rust support for Dart's Native Assets.
+  Rust support for Dart's build hooks.
   Automatically builds and bundles your Rust code with your Dart code!
 version: 1.0.0
 homepage: https://github.com/GregoryConrad/native_toolchain_rust