use matrix instead of separate workflows

.github/workflows/macos.yml

@@ -1,22 +0,0 @@
-name: MacOs
-
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
-
-env:
-  CARGO_TERM_COLOR: always
-
-jobs:
-  build:
-
-    runs-on: macos-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose

.github/workflows/rust.yml

@@ -1,4 +1,4 @@
-name: Linux
+name: Rust
 
 on:
   push:
@@ -11,8 +11,11 @@ env:
 
 jobs:
   build:
+    strategy:
+        matrix:
+            os: [ubuntu-latest, windows-latest, macos-latest]
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v3
@@ -20,3 +23,4 @@ jobs:
       run: cargo build --verbose
     - name: Run tests
       run: cargo test --verbose
+

.github/workflows/windows.yml

@@ -1,22 +0,0 @@
-name: Windows
-
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
-
-env:
-  CARGO_TERM_COLOR: always
-
-jobs:
-  build:
-
-    runs-on: windows-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose