Create CI.yml.

.github/workflows/CI.yml

@@ -0,0 +1,34 @@
+name: Testing suite
+
+on: 
+  schedule:
+    - cron: "0 11 * * 1"
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+jobs:
+  run:
+    runs-on: ubuntu-22.04
+    defaults:
+      run:
+        shell: bash -l {0}
+    steps:
+        - name: Checkout
+          uses: actions/checkout@v2
+        - name: Setup gfortran
+          run: |
+            sudo apt-get update
+            sudo apt-get install  \
+              gfortran            \
+        - name: Setup FPM
+          uses: fortran-lang/setup-fpm@v5
+          with:
+            github-token: ${{ secrets.GITHUB_TOKEN }}
+        - name: Build WannInt
+          run: |
+            fpm run main
+        - name: Test WannInt
+          run: |
+            fpm test