[native_assets_cli] Refactor into BuildInput (#1871)

This PR changes the public API according to #1738, and should have minimal behavior changes.

Everything in `HookConfig` causes a different `input.outputDirectory`, all the other elements in the `input` do not.

* This leads to the `packageName` no longer influencing the checksum, so the default output directory has been changed to `.dart_tool/native_assets_builder/$packageName/$checksum`.

Follow up PRs:

* Serialize to a new JSON format
* get rid of cCompiler envScript

Design:

* #1738

Author: dcharkes

pkgs/native_assets_builder/CHANGELOG.md

@@ -1,6 +1,6 @@
-## 0.10.3-wip
+## 0.11.0-wip
 
-- Nothing yet.
+- Bump `package:native_assets_cli` to 0.11.0.
 
 ## 0.10.2
 

pkgs/native_assets_builder/lib/native_assets_builder.dart

@@ -5,11 +5,11 @@
 export 'package:native_assets_builder/src/build_runner/build_runner.dart'
     show
         ApplicationAssetValidator,
-        BuildConfigCreator,
-        BuildConfigValidator,
+        BuildInputCreator,
+        BuildInputValidator,
         BuildValidator,
-        LinkConfigCreator,
-        LinkConfigValidator,
+        LinkInputCreator,
+        LinkInputValidator,
         LinkValidator,
         NativeAssetsBuildRunner;
 export 'package:native_assets_builder/src/model/build_result.dart';