chore: Split StorageLayout trait into StorageLayoutR + StorageLayoutW #4153
+220
−355
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We have
ReadPolicyandWritePolicyforCheckpointLayout,CanisterLayout,PageMapLayout,SnapshotLayout. But the trait we use to expose functionality forPageMapLayoutinto replicated_state didn't do any distinction for readable and writeable data. This change splitsStorageLayoutintoStorageLayoutRneeded to deserialize data and retrieve information about existing files, andStorageLayoutWfor creating new files.Also removed unused logic of writing base files .