Testing: add a small Addressable build including scenes

The TestCommon folder has reference built content that is used for testing, we are still playing "catch up" because the testing coverage is still spotty for all the different build pipelines and variations that UnityDataTool covers.

Currently there is no reference AssetBundles that are built by Addressables so testing of that case has only happened in adhoc fashion, e.g. with large projects. Its primarily Analyze that is of concern - the dump, archive and serialized-file commands are generalized enough that they are unlikely to have bugs specific to Addressables.

The "Scene" case is a particular special case and required fixing because it wasn't properly handled by Analyze (issue #81). So any reference content should include at least one AssetBundle containing scenes.

从 TestCommon 文件夹开始，查看现有的参考构建内容以及 Analyze 如何使用这些内容。构建一个至少包含一个场景的小型 Addressables AssetBundle，然后验证它是否覆盖了 issue #81 中描述的场景情况的 Analyze 覆盖范围。