CI: Run tests for loongarch64-unknown-linux-gnu (#111)

Author: heiher

.github/workflows/main.yml

@@ -53,6 +53,7 @@ jobs:
         aarch64-unknown-linux-musl
         powerpc64le-unknown-linux-gnu
         armv5te-unknown-linux-gnueabi
+        loongarch64-unknown-linux-gnu
     - run: cargo check --tests -vv
     - run: cargo check --tests -vv --target=x86_64-unknown-linux-musl
     - run: cargo check --tests -vv --target=x86_64-unknown-linux-gnux32
@@ -63,6 +64,7 @@ jobs:
     - run: cargo check --tests -vv --target=aarch64-unknown-linux-musl
     - run: cargo check --tests -vv --target=powerpc64le-unknown-linux-gnu
     - run: cargo check --tests -vv --target=armv5te-unknown-linux-gnueabi
+    - run: cargo check --tests -vv --target=loongarch64-unknown-linux-gnu
 
   gen:
     name: Update generated files