Add CI/CD tests to the repository using github actions

This pipeline is triggered if any pushes occur on master or develop OR if a PR
is labeled with an appropriate tag as specified by the tests within this
workflow. Additionally, a specific label to trigger all tests can be used that
will be removed from the PR when all tests finish, regardless of exit status.

The pipeline makes extensive use of the reusable test_workflow.yml to
instantiate tests on runners.

This pipeline currently only includes the definition for one test to be run on
a github runner with tags that satisfy "derecho". Likewise, other hard-coded
values appearing in here assume a particular runner setup and environment.

.github/workflows/ci.yml

@@ -0,0 +1,84 @@
+name: Regression Suite
+run-name : ${{ github.event_name == 'push' && 'CI' || github.event.label.name }} (${{ github.event_name }})
+
+on:
+  push:
+    branches: [ master, develop ]
+  pull_request:
+    types:    [ labeled ]
+
+
+# Write our tests out this way for easier legibility
+# testsSet    :
+#   - key : value
+#     key : value
+#     tests :
+#       - value
+#       - value
+#   - < next test >
+# https://stackoverflow.com/a/68940067
+jobs:
+  buildtests:
+    if : ${{ github.event.label.name == 'compile-tests' || github.event.label.name == 'all-tests' || github.event_name == 'push' }}
+    strategy:
+      max-parallel: 4
+      fail-fast: false
+      matrix:
+
+        testSet  :
+          - host : derecho
+            hpc-workflows_path : .ci/hpc-workflows
+            archive : /glade/work/aislas/github/runners/mpas/derecho/logs/
+            account : NMMM0012
+            name : "Make Compilation Tests"
+            id   : make-tests
+            fileroot : mpas_compilation
+            args : -j='{"node_select":{"-l ":{"select":1}}}'
+            pool  : 8
+            tpool : 1
+            mkdirs : true
+            tests :
+              - make-gnu
+              # add new compilation tests here
+
+    uses : ./.github/workflows/test_workflow.yml
+    with :
+      # This should be the only hard-coded value, we don't use ${{ github.event.label.name }}
+      # to avoid 'all-tests' to be used in this workflow
+      label    : compile-tests
+
+      # Everything below this should remain the same and comes from the testSet matrix
+      hpc-workflows_path : ${{ matrix.testSet.hpc-workflows_path }}
+      archive  : ${{ matrix.testSet.archive }}
+      name     : ${{ matrix.testSet.name }}
+      id       : ${{ matrix.testSet.id }}
+      host     : ${{ matrix.testSet.host }}
+      fileroot : ${{ matrix.testSet.fileroot }}
+      account  : ${{ matrix.testSet.account }}
+      tests    : ${{ toJson( matrix.testSet.tests ) }}
+      mkdirs   : ${{ matrix.testSet.mkdirs }}
+      args     : ${{ matrix.testSet.args }}
+      pool     : ${{ matrix.testSet.pool }}
+      tpool    : ${{ matrix.testSet.tpool }}
+    permissions:
+      contents: read
+      pull-requests: write
+    name : Test ${{ matrix.testSet.name }} on ${{ matrix.testSet.host }}
+
+  # In the event that 'all-tests' is used, this final job will be the one to remove
+  # the label from the PR
+  removeAllLabel :
+    if : ${{ !cancelled() && github.event.label.name == 'all-tests' }}
+    name : Remove 'all-tests' label
+    runs-on: ubuntu-latest
+    needs : [ buildtests ] # Put tests here to make this wait for the tests to complete
+    steps: 
+      - name : Remove '${{ github.event.label.name }}' label
+        env:
+          PR_NUMBER: ${{ github.event.number }}
+        run: |
+          curl \
+            -X DELETE \
+            -H "Accept: application/vnd.github.v3+json" \
+            -H 'Authorization: token ${{ github.token }}' \
+            https://api.github.com/repos/${GITHUB_REPOSITORY}/issues/${PR_NUMBER}/labels/${{ github.event.label.name }}