ci: add cross-compile workflow for release binaries

Author: Princey9

.github/workflows/main.yml

@@ -0,0 +1,59 @@
+name: Release NoteNest Binaries
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target:
+          - aarch64-unknown-linux-musl
+          - x86_64-unknown-linux-musl
+
+    env:
+      BINARY_NAME: notenest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo
+        uses: Swatinem/rust-cache@v2
+
+      - name: Install Cross
+        run: cargo install cross --locked
+
+      - name: Build with Cross
+        run: cross build --target ${{ matrix.target }} --release --verbose
+
+      - name: Create Release Archive
+        run: |
+          mkdir -p dist
+          cp target/${{ matrix.target }}/release/$BINARY_NAME dist/$BINARY_NAME
+          tar -czvf dist/${{ matrix.target }}.tar.gz -C dist $BINARY_NAME
+          rm dist/$BINARY_NAME
+
+      - name: Upload workflow artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: notenest-${{ matrix.target }}
+          path: dist/${{ matrix.target }}.tar.gz
+
+      - name: Upload release assets
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: softprops/action-gh-release@v2
+        with:
+          files: dist/${{ matrix.target }}.tar.gz
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}