pkg(rust-1.63.0): Added Rust 1.63.0

Following template from #503 to bump the Rust toolchain to the latest
stable

Signed-off-by: pan93412 <pan93412@gmail.com>

packages/rust/1.63.0/test.rs

@@ -0,0 +1,7 @@
+fn main() {
+    println!("OK");
+
+    // 1.63.0 features
+    use std::sync::Mutex;
+    const _M: Mutex<()> = Mutex::new(());
+}