add examples

Cargo.toml

 [workspace]
 resolver = "2"
 members = [
+  "crates/examples",
   "crates/support",
   "crates/configuration",
   "crates/orchestrator",

crates/examples/Cargo.toml

+[package]
+name = "examples"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+configuration = { path = "../configuration" }

crates/examples/examples/small_network.rs

+use configuration::NetworkConfigBuilder;
+
+fn main() {
+    let config = NetworkConfigBuilder::new()
+        .with_relaychain(|r| {
+            r.with_chain("rococo-local")
+                .with_node(|node| {
+                    node.with_name("alice").with_command("polkadot")
+            })
+        })
+        .build();
+
+    println!("{:?}", config.unwrap());
+}

crates/examples/examples/small_network_with_default.rs

+use configuration::NetworkConfigBuilder;
+
+fn main() {
+    let config = NetworkConfigBuilder::new()
+        .with_relaychain(|r| {
+            r.with_chain("rococo-local")
+                .with_default_command("polkadot")
+                .with_node(|node| node.with_name("alice"))
+                .with_node(|node| node.with_name("name"))
+        })
+        .build();
+
+    println!("{:?}", config.unwrap());
+}