feat(workflows): add os's to the build matrix (#170)

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#### What this PR does / why we need it:

#### Which issue(s) does this PR fixes?:
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Fixes #62 

#### Additional comments?:

Signed-off-by: Eshan Shafeeq <[email protected]>
Co-authored-by: Fuxing Loh <[email protected]>

Author: DieHard073055

.github/workflows/ci.yml

@@ -91,7 +91,10 @@ jobs:
 
   build_cargo:
     name: Build (cargo)
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0