add trivial examples

examples/base64_test/Cargo.lock

@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
+[[package]]
+name = "base64_test"
+version = "0.1.0"
+dependencies = [
+ "base64",
+]

examples/base64_test/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "base64_test"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+base64 = "0.22.1"

examples/base64_test/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, {}!", base64::encode("world"));
+}