ci: implement github action to build binaries for all platforms

.github/workflows/release.yml

@@ -0,0 +1,66 @@
+name: Build and Release
+on:
+  push:
+    branches:
+      - master
+      - feat/initial-implementation
+jobs:
+  build:
+    name: Build and Release
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      # - name: Install Rust
+      #   uses: actions-rs/toolchain@v1
+      #   with:
+      #     toolchain: stable
+      #     override: true
+
+      - name: Install cross
+        run: cargo install cross
+
+      - name: Get version
+        id: get_version
+        run: echo "::set-output name=version::$(cargo read-manifest | jq -r '.version')"
+
+      - name: Check if release exists
+        id: check_release
+        run: |
+          RELEASE_URL=$(curl --silent "https://api.github.com/repos/$GITHUB_REPOSITORY/releases/tags/${{ steps.get_version.outputs.version }}" \
+            -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+            -H "Accept: application/vnd.github.v3+json" | jq -r '.url')
+          if [[ "$RELEASE_URL" != "null" ]]; then
+            echo "::set-output name=exists::true"
+          else
+            echo "::set-output name=exists::false"
+          fi
+
+      - name: Build for Linux
+        uses: actions-rs/cargo@v1
+        if: steps.check_release.outputs.exists == 'false'
+        with:
+          command: build
+          args: --release --target=x86_64-unknown-linux-gnu
+
+      - name: Build for ARM Linux
+        run: cross build --release --target=armv7-unknown-linux-gnueabihf
+        if: steps.check_release.outputs.exists == 'false'
+
+      - name: Build for macOS
+        run: cross build --release --target=x86_64-apple-darwin
+        if: steps.check_release.outputs.exists == 'false'
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        if: steps.check_release.outputs.exists == 'false'
+        with:
+          tag_name: ${{ steps.get_version.outputs.version }}
+          files: |
+            target/x86_64-unknown-linux-gnu/release/relay-server
+            target/armv7-unknown-linux-gnueabihf/release/relay-server
+            target/x86_64-apple-darwin/release/relay-server
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}