feat: add post3 s3 proxy for postgresql

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/post3-server/Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "post3-server"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
+post3.workspace = true
+
+anyhow.workspace = true
+tokio.workspace = true
+tracing.workspace = true
+tracing-subscriber.workspace = true
+clap.workspace = true
+dotenvy.workspace = true
+uuid.workspace = true
+bytes.workspace = true
+axum.workspace = true
+tower.workspace = true
+tower-http.workspace = true
+notmad.workspace = true
+tokio-util.workspace = true
+sqlx.workspace = true
+chrono.workspace = true
+quick-xml.workspace = true
+md-5.workspace = true
+hex.workspace = true
+serde.workspace = true
+
+[dev-dependencies]
+aws-config = "1"
+aws-sdk-s3 = "1"
+aws-credential-types = "1"
+aws-types = "1"
+tokio = { workspace = true, features = ["test-util"] }
+tower.workspace = true
+tracing-subscriber.workspace = true
+tempfile.workspace = true