Add coordinator client library, installation scripts, and new test runners

- Add coordinator client library to workspace
- Add installation documentation and heroscript
- Add new test runners for Osiris and Sal
- Update hero runner test to handle invalid heroscript errors
- Update README with installation instructions

lib/clients/coordinator/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "hero-coordinator-client"
+version.workspace = true
+edition.workspace = true
+description = "Client library for Hero Coordinator"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+# Core dependencies
+serde.workspace = true
+serde_json.workspace = true
+thiserror.workspace = true
+log.workspace = true
+tokio.workspace = true
+async-trait.workspace = true
+
+# JSON-RPC client
+jsonrpsee = { workspace = true, features = ["http-client", "macros"] }
+reqwest = { version = "0.12", features = ["json"] }
+
+# Time handling
+chrono.workspace = true
+
+# Hero models
+hero-job = { path = "../../models/job" }
+
+[dev-dependencies]
+tokio-test = "0.4"
+clap = { version = "4.0", features = ["derive", "env"] }
+env_logger = "0.11"