feat: add dx print command, drive hotpatching engine directly. (#4602)

* feat: add dx print command

* small tweak to how client_target is handled

* hotpatching engine wired up!

* small cleanups

* lighter diff

* little bit more light cleanups

* remove changes to manganis

* fix wrong dir error

* move session_cache fixing to prebuild step

packages/dx-wire-format/Cargo.toml

@@ -15,3 +15,5 @@ rust-version = "1.79.0"
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 cargo_metadata = { workspace = true }
+manganis-core = { workspace = true }
+subsecond-types = { workspace = true }