feat(axum-extra): add trait GetCachedFromRef to get cached value #2925
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Motivation
When I use
Cached<T>, I find that I can't accessCached<T>elsewhere becauseCachedEntryis inaccessible.Solution
add trait
GetCachedFromRef<T>to get cached value.impl
GetCachedFromRef<T>for [http::Extensions,http::request::Parts,axum::Request]