Add OS matrix strategy to Rust CI workflow

Author: LuckyTurtleDev

.github/workflows/rust.yml

@@ -9,7 +9,11 @@ on:
 jobs:
 
   check:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
@@ -29,7 +33,11 @@ jobs:
 
   test:
     needs: [check]
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - run: sudo apt-get update -y && sudo apt-get install -y knot-dnsutils