Add Windows build to CI

.drone.yml

@@ -6,15 +6,23 @@ steps:
     image: rust
     commands:
       - apt-get update
-      - apt-get install -y libasound2-dev
+      - apt-get install -y libasound2-dev g++-mingw-w64-x86-64
+      - rustup target add x86_64-pc-windows-gnu
+      - rustup toolchain install stable-x86_64-pc-windows-gnu
       - cargo build --release --verbose --all
+      - cargo build --release --verbose --all --target x86_64-pc-windows-gnu
+      - mv target/release/kroz target/kroz_linux_x86_64
+      - mv target/x86_64-pc-windows-gnu/release/kroz.exe target/kroz_win_x86_64.exe
   - name: release
     image: plugins/gitea-release
     settings:
       base_url: https://git.valter.cat
       api_key:
         from_secret: gitea_token
-      files: target/release/kroz
+      files:
+        - target/kroz_linux_x86_64
+        - target/kroz_win_x86_64.exe
+      prerelease: true
     when:
       event:
         - tag