Use hpp-specific cache.data in sample hpp_pipeline_cache.

[asuessenbach]

Description

For whatever reason, the cache data written by the hpp_pipeline_cache sample is somewhat longer than that written by the pipeline_cache sample. Thus, if you run pipeline_cache after hpp_pipeline_cache, you get a failure. To prevent that from happening, I introduce a dedicated hpp_cache.data file. The better approach would be to adjust the difference, but I can't get a grip on it.

Build tested on Win10 with VS2022. Run tested on Win10 with NVidia GPU.

Fixes #

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