[native_toolchain_c] Add a callback param for CBuilder.run

[lindeer]

For who want to build with custom command, we could add a callback function in cbuilder.dart, something like:

  @override
  Future<void> run({
    required BuildConfig buildConfig,
    required BuildOutput buildOutput,
    required Logger? logger,
    BuilderFunction? callback,
  }) async {

    if (!buildConfig.dryRun) {
      final task = RunCBuilder(
        buildConfig: buildConfig,
        logger: logger,
        sources: sources,
        dynamicLibrary:
            _type == _CBuilderType.library && linkMode == LinkMode.dynamic
                ? libUri
                : null,
        staticLibrary:
            _type == _CBuilderType.library && linkMode == LinkMode.static
                ? libUri
                : null,
        executable: _type == _CBuilderType.executable ? exeUri : null,
        installName: installName,
      );
      await callback == null ? task.run() : callback(task);
    }

and use it in build.dart in package:

  await cbuilder.run(
    buildConfig: buildConfig,
    buildOutput: buildOutput,
    logger: Logger('')..onRecord.listen((record) => print(record.message)),
    callback: (task) {
      await Process.run('make', task.dynamicLibrary);
    },
  );

this could avoid writing redundant code about BuildOutput

[dcharkes]

Yeah it would be nice to somehow make some logic reusable.

Maybe adding a builder function is not completely the right thing to do. Instead maybe we should introduce some AbstractBuilder class with a bunch of facilities that CBuilder extends for example.

[lindeer]

finished in native_assets_builder-v0.6.0