Initializes the private settlement package (#60)

* initializes the private settlement crate

* adds private settlement to the main cargo.toml

Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 members = [
   "multiplier",
+  "private-settlement",
   "semaphore",
   "rln",
   "rln-wasm",

private-settlement/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "private-settlement"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

private-settlement/README.md

@@ -0,0 +1,4 @@
+# Private Settlement  Module
+
+This module is to provide APIs to manage, compute and verify [Private Settlement](https://rfc.vac.dev/spec/44/) zkSNARK proofs and primitives.
+

private-settlement/src/lib.rs

@@ -0,0 +1,8 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        let result = 2 + 2;
+        assert_eq!(result, 4);
+    }
+}