chore: move examples out of various places into a top-level dir (#10)

examples/servers/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "mcp-server-examples"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[dependencies]
+mcp-server = { path = "../../crates/mcp-server" }
+mcp-core = { path = "../../crates/mcp-core" }
+mcp-macros = { path = "../../crates/mcp-macros" }
+tokio = { version = "1", features = ["full"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+anyhow = "1.0"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+tracing-appender = "0.2"
+futures = "0.3"
+
+[[example]]
+name = "counter-server"
+path = "src/counter_server.rs"