Add durable credential registry and secret lifecycle

crates/remora-credentials/Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "remora-credentials"
+edition.workspace = true
+publish = false
+rust-version.workspace = true
+version.workspace = true
+
+[dependencies]
+getrandom = "0.3.4"
+remora-domain.workspace = true
+remora-durable.workspace = true
+reqwest = { version = "0.12.28", default-features = false, features = [
+    "json",
+    "rustls-tls-webpki-roots",
+] }
+serde = { workspace = true, features = ["derive"] }
+serde_json.workspace = true
+sha2.workspace = true
+sqlx.workspace = true
+thiserror.workspace = true
+time.workspace = true
+tokio.workspace = true
+
+[dev-dependencies]
+tokio = { workspace = true, features = ["macros", "rt-multi-thread", "sync", "time"] }