add security audit workflow for Rust project

Author: lxsaah

.github/workflows/security.yml

@@ -0,0 +1,42 @@
+name: Security Audit
+
+on:
+  push:
+    paths:
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+  pull_request:
+    paths:
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+
+jobs:
+  audit:
+    name: Security Audit
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@stable
+    
+    - name: Install cargo-audit
+      run: cargo install cargo-audit
+    
+    - name: Run security audit
+      run: cargo audit
+
+  deny:
+    name: License and Dependency Check
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@stable
+    
+    - name: Install cargo-deny
+      run: cargo install cargo-deny
+    
+    - name: Run cargo-deny
+      run: cargo deny check

README.md

@@ -3,6 +3,7 @@
 </div>
 
 [![Build Status](https://img.shields.io/github/actions/workflow/status/aimdb-dev/aimdb/ci.yml?branch=main)](https://github.com/aimdb-dev/aimdb/actions)
+[![Security Audit](https://img.shields.io/github/actions/workflow/status/aimdb-dev/aimdb/security.yml?branch=main&label=security)](https://github.com/aimdb-dev/aimdb/actions)
 [![Crates.io](https://img.shields.io/crates/v/aimdb.svg)](https://crates.io/crates/aimdb)
 [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](LICENSE)
 [![Rust](https://img.shields.io/badge/rust-stable-orange.svg)](https://www.rust-lang.org)