feat(poster-storage): implement S3/Minio storage adapter and configuration

Co-authored-by: Copilot <copilot@github.com>

crates/adapters/poster-storage/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "poster-storage"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+domain = { workspace = true }
+anyhow = { workspace = true }
+async-trait = { workspace = true }
+tracing = { workspace = true }
+object_store = { workspace = true }
+
+[dev-dependencies]
+tokio = { workspace = true }
+uuid = { workspace = true }