Registry response cache does not differentiate by registry URL

[Christoph Herzog]

The cache used for registry API responses in WapmSource does not differentiate cache items by registry endpoint, leading to sharing of cache data between different registries, and confusing behaviour.

The cache should be updated to include the normalized registry URL in the cache path.

Relevant setup code here:

wasmer/lib/cli/src/commands/run/wasi.rs

Line 646 in 4fa2687

 .with_local_cache(cache_dir, WAPM_SOURCE_CACHE_TIMEOUT);