tarantool / go-storage / 25113716603

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github

namer: add LayeredNamer for per-category key layout

Add LayeredNamer: a namespace-agnostic namer that places each key
category under its own top-level location segment:

  /<objectLocation>/<name>                       (value)
  /hash/<hashLocation>/<objectLocation>/<name>   (hash, one per hasher)
  /sig/<sigLocation>/<objectLocation>/<name>     (signature, one per signer)

CompactSingleHash / CompactSingleSig drop the per-hasher / per-signer
location segment when the configured list has exactly one entry; the
constructor validates that the corresponding list has exactly one entry.

The constructor validates all segments (non-empty, no slashes, unique
across categories) and returns an error on violation. ParseKey parses
back to (name, KeyType, property) unambiguously.

Part of TNTP-7587

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