feat(mcp): add LLM server crate and remote client integration

- Introduce `owlen-mcp-llm-server` crate with RPC handling, `generate_text` tool, model listing, and streaming notifications.
- Add `RpcNotification` struct and `MODELS_LIST` method to the MCP protocol.
- Update `owlen-core` to depend on `tokio-stream`.
- Adjust Ollama provider to omit empty `tools` field for compatibility.
- Enhance `RemoteMcpClient` to locate the renamed server binary, handle resource tools locally, and implement the `Provider` trait (model listing, chat, streaming, health check).
- Add new crate to workspace `Cargo.toml`.

crates/owlen-mcp-llm-server/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "owlen-mcp-llm-server"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+owlen-core = { path = "../owlen-core" }
+owlen-ollama = { path = "../owlen-ollama" }
+tokio = { version = "1.0", features = ["full"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+anyhow = "1.0"
+tokio-stream = "0.1"
+
+[[bin]]
+name = "owlen-mcp-llm-server"
+path = "src/lib.rs"
+
+[lib]
+path = "src/lib.rs"