chore: restore product scaffold to rollback baseline

crates/chanora_server_prefetch/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "chanora_server_prefetch"
+description = "Chanora — server-address prefetch cache and policy built on chanora_resolver."
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+authors.workspace = true
+license.workspace = true
+repository.workspace = true
+publish.workspace = true
+
+[dependencies]
+chanora_resolver = { path = "../chanora_resolver" }
+thiserror.workspace = true
+tracing.workspace = true
+tokio = { version = "1", features = ["sync", "rt", "macros"] }
+
+[features]
+test-support = []