fix: consolidate futurenet definitions to static method

cmd/soroban-cli/src/commands/config/locator.rs

@@ -183,10 +183,7 @@ impl Args {
         let res = KeyType::Network.read_with_global(name, &self.local_config()?);
         if let Err(Error::ConfigMissing(_, _)) = &res {
             if name == "futurenet" {
-                let network = Network {
-                    rpc_url: "https://rpc-futurenet.stellar.org/soroban/rpc".to_string(),
-                    network_passphrase: "Test SDF Future Network ; October 2022".to_string(),
-                };
+                let network = Network::futurenet();
                 self.write_network(name, &network)?;
                 return Ok(network);
             }

cmd/soroban-cli/src/commands/config/network/mod.rs

@@ -116,3 +116,12 @@ pub struct Network {
         )]
     pub network_passphrase: String,
 }
+
+impl Network {
+    pub fn futurenet() -> Self {
+        Network {
+            rpc_url: "https://rpc-futurenet.stellar.org:443".to_owned(),
+            network_passphrase: "Test SDF Future Network ; October 2022".to_owned(),
+        }
+    }
+}

cmd/soroban-cli/src/commands/contract/bindings/typescript.rs

@@ -65,10 +65,11 @@ impl Cmd {
         let Network {
             rpc_url,
             network_passphrase,
-        } = self.network.get(&self.locator).unwrap_or(Network {
-            rpc_url: "https://rpc-futurenet.stellar.org:443/soroban/rpc".to_string(),
-            network_passphrase: "Test SDF Future Network ; October 2022".to_string(),
-        });
+        } = self
+            .network
+            .get(&self.locator)
+            .ok()
+            .unwrap_or_else(Network::futurenet);
         p.init(
             &self.contract_name,
             &self.contract_id,