ci: add prebuild for armv7 (e.g. Raspberry Pi)

Author: DevYukine

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        target: [x86_64-unknown-linux-musl, x86_64-unknown-linux-gnu, i686-unknown-linux-gnu, aarch64-unknown-linux-gnu]
+        target: [x86_64-unknown-linux-musl, x86_64-unknown-linux-gnu, i686-unknown-linux-gnu, aarch64-unknown-linux-gnu, armv7-unknown-linux-gnueabihf]
     steps:
       - name: Checkout Source code
         uses: actions/checkout@v4