refactor: update library name in Cargo.toml and adjust usage in README and tests to reflect new package structure

Author: vivianjeng

Cargo.toml

@@ -10,6 +10,9 @@ categories = ["cryptography", "zk", "semaphore"]
 documentation = "https://semaphore.pse.dev/"
 readme = "README.md"
 
+[lib]
+name = "semaphore"
+
 [dependencies]
 blake = "2.0.2"
 light-poseidon = "0.3.0"

README.md

@@ -84,7 +84,7 @@ semaphore-protocol = "0.1"
 
 -   Generate a semaphore identity from a string
     ```rust
-    use semaphore_protocol::identity::Identity;
+    use semaphore::identity::Identity;
     let identity = Identity::new("secret".as_bytes());
     ```
 -   Get the identity commitment
@@ -101,13 +101,13 @@ semaphore-protocol = "0.1"
 -   Generate a group member from an identity
 
     ```rust
-    use semaphore_protocol::utils::to_element;
+    use semaphore::utils::to_element;
     let member = to_element(*identity.commitment())
     ```
 
 -   Generate a semaphore group from members
     ```rust
-    use semaphore_protocol::group::{Element, Group};
+    use semaphore::group::{Element, Group};
     const MEMBER1: Element = [1; 32];
     const MEMBER2: Element = [2; 32];
     let group = Group::new(&[
@@ -126,8 +126,8 @@ semaphore-protocol = "0.1"
 -   Generate a semaphore proof
 
     ```rust
-    use semaphore_protocol::proof::GroupOrMerkleProof;
-    use semaphore_protocol::proof::Proof;
+    use semaphore::proof::GroupOrMerkleProof;
+    use semaphore::proof::Proof;
 
     let message = "message";
     let scope = "scope";
@@ -161,7 +161,7 @@ semaphore-protocol = "0.1"
     ```
 -   Deserialize a semaphore proof
     ```rust
-    use semaphore_protocol::proof::SemaphoreProof;
+    use semaphore::proof::SemaphoreProof;
     let proof_imported = SemaphoreProof::import(&proof_json).unwrap();
     ```
 

tests/group.rs

@@ -71,7 +71,7 @@ mod group {
     use ark_ed_on_bn254::Fq;
     use ark_ff::{BigInteger, PrimeField};
     use num_bigint::BigInt;
-    use semaphore_protocol::group::{EMPTY_ELEMENT, Element, Group};
+    use semaphore::group::{EMPTY_ELEMENT, Element, Group};
     use std::str::FromStr;
 
     fn str_to_element(s: &str) -> Element {

tests/identity.rs

@@ -59,7 +59,7 @@ mod identity {
     use super::*;
     use ark_ed_on_bn254::{Fq, Fr};
     use ark_ff::{AdditiveGroup, BigInteger, PrimeField};
-    use semaphore_protocol::{
+    use semaphore::{
         baby_jubjub::EdwardsAffine,
         error::SemaphoreError,
         identity::{Identity, Signature},