Add/Update stuff (#159)

.github/matchers/dotnet.json

@@ -0,0 +1,28 @@
+{
+    "problemMatcher": [
+        {
+            "owner": "dotnet-file",
+            "pattern": [
+                {
+                    "regexp": "^(.+)\\((\\d+).+\\):\\s(\\w+)\\s(.+)\\:\\s(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "severity": 3,
+                    "code": 4,
+                    "message": 5
+                }
+            ]
+        },
+        {
+            "owner": "dotnet-run",
+            "pattern": [
+                {
+                    "regexp": "^.+\\s\\:\\s(\\w+)\\s(.*)\\:\\s(.*)$",
+                    "severity": 1,
+                    "code": 2,
+                    "message": 3
+                }
+            ]
+        }
+    ]
+}

.github/workflows/ci_build.yml

@@ -7,11 +7,17 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - uses: actions/checkout@master
+
             - uses: actions/setup-dotnet@v1
               with:
                 dotnet-version: '3.1.200' # SDK Version
+
+            - name: Enable problem matchers
+              run: echo "::add-matcher::.github/matchers/dotnet.json"
+
             - name: Build code
               run: dotnet build
+
             - name: Test code
               run: dotnet test -v minimal /p:CollectCoverage=true /p:CoverletOutputFormat=lcov /p:CoverletOutput=${{github.workspace}}/codecover/lcov.info