Add GitHub Actions workflow for Rust deployment

.github/workflows/deploy.yaml

@@ -0,0 +1,33 @@
+name: Rust
+
+on:
+  push:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+      - name: Build Release
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release --verbose
+      - name: Copy to Server
+        uses: appleboy/scp-action@master
+        with:
+          host: ${{ secrets.SERVER_HOST }}
+          username: ${{ secrets.SERVER_USERNAME }}
+          key: ${{ secrets.SERVER_SSH_KEY }}
+          source: "target/release/"
+          target: "/root/personal/discord-bot/"