Create workflows: build, docs, security.

Author: SSobol77

.github/workflows/build.yml

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+name: Build & Test
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v3
+    
+    - uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        override: true
+    
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y nasm grub-common xorriso qemu-system-x86
+    
+    - name: Check
+      run: cargo check --all
+    
+    - name: Build (Debug)
+      run: cargo build --all
+    
+    - name: Build (Release)
+      run: cargo build --all --release
+    
+    - name: Lint with Clippy
+      run: cargo clippy --all -- -D warnings
+    
+    - name: Format check
+      run: cargo fmt --all -- --check
+    
+    - name: Run tests
+      run: cargo test --all
+    
+    - name: Upload artifacts
+      if: success()
+      uses: actions/upload-artifact@v3
+      with:
+        name: build-artifacts
+        path: target/release/

.github/workflows/docs.yml

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+name: Documentation
+
+on:
+  push:
+    branches: [ main, develop ]
+
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v3
+    
+    - uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        override: true
+    
+    - name: Build docs
+      run: cargo doc --all --no-deps
+    
+    - name: Deploy to GitHub Pages
+      if: github.ref == 'refs/heads/main'
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: ./target/doc

.github/workflows/security.yml

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+name: Security Audit
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
+  schedule:
+    - cron: '0 0 * * 0'  # Weekly on Sunday
+
+jobs:
+  audit:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      issues: write  # Required for the audit action to create issues
+    steps:
+    - uses: actions/checkout@v4 
+    - name: Run security audit
+      uses: actions-rust-lang/audit@v1
+      # with:
+      #   ignore: RUSTSEC-2020-0036
+      #   token: ${{ secrets.GITHUB_TOKEN }}