feat: add initial implementation of Cargo.toml, Cargo.lock, and lib.rs with defang_i_paddr function

1108_defanging_an_ip_address/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "defanging_an_ip_address"
+version = "0.1.0"

1108_defanging_an_ip_address/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "defanging_an_ip_address"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

1108_defanging_an_ip_address/src/lib.rs

@@ -0,0 +1,7 @@
+pub struct Solution;
+
+impl Solution {
+    pub fn defang_i_paddr(address: String) -> String {
+        address.replace(".", "[.]")
+    }
+}