Add github action to run mypy

Signed-off-by: Martin Hickey <martin.hickey@ie.ibm.com>

Author: hickeyma

.github/workflows/lint.yml

@@ -47,6 +47,10 @@ jobs:
             commands: |
               echo "::add-matcher::.github/workflows/matchers/pylint.json"
               tox -e lint
+          - name: "mypy"
+            commands: |
+              echo "::add-matcher::.github/workflows/matchers/mypy.json"
+              tox -e mypy
   
     steps:
       - name: "Harden Runner"

.github/workflows/matchers/mypy.json

@@ -0,0 +1,16 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "mypy",
+      "pattern": [
+        {
+          "regexp": "^(.+):(\\d+):\\s(error|warning):\\s(.+)$",
+          "file": 1,
+          "line": 2,
+          "severity": 3,
+          "message": 4
+        }
+      ]
+    }
+  ]
+}