add workflow (#81)

.github/workflows/upload_binary.yml

@@ -0,0 +1,31 @@
+name: Upload binary
+
+on:
+  release:
+    types:
+    - created
+
+jobs:
+  upload-assets:
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+        - {os: ubuntu-latest, target: x86_64-unknown-linux-gnu}
+        - {os: ubuntu-latest, target: aarch64-unknown-linux-gnu}
+        - {os: macos-latest, target: x86_64-apple-darwin}
+        - {os: macos-latest, target: aarch64-apple-darwin}
+    runs-on: ${{ matrix.config.os }}
+    steps:
+    - uses: actions/checkout@v4
+    - uses: taiki-e/upload-rust-binary-action@v1
+      with:
+        bin: bothan
+        target: ${{ matrix.config.target }}
+        tar: unix
+        zip: unix
+        archive: $bin-$tag-$target
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        CARGO_PROFILE_RELEASE_LTO: true
+