Check task missing for new C++ plugins

There is no check lifestyle task generated for each binary of the new style C++ plugins, which makes it impossible to write check tasks. Check tasks are extremely useful in the native world for checking things like exported symbols, if the ordinal table is right, and many other things.

Start by tracing how the new-style C++ plugins generate tasks for each binary, then compare that flow with the existing check-task behavior. Done means every binary produced by a new-style C++ plugin has a check task that can be used to inspect exported symbols, ordinal tables, and similar native properties.

Written by the indexing model from the issue text.