[#96 ] Add workflow for unit test code coverage results

Signed-off-by: Ivan Marinov <ivan.marinov@bosch.io>

.github/workflows/generate-coverage-report.yaml

@@ -0,0 +1,14 @@
+name: Create Coverage
+
+on: 
+  push:
+     branches:
+     - main
+
+jobs:
+  generate-coverage-report:
+    uses: eclipse-kanto/kanto/.github/workflows/coverage-template.yaml@main
+    with: 
+      coverage-command: |
+        docker system prune -f
+        docker-compose -f ./docker/docker-compose-tests.yml up --build --no-color tests

README.md

@@ -2,6 +2,8 @@
 
 # Eclipse Kanto - Suite Connector
 
+![Coverage](https://github.com/eclipse-kanto/suite-connector/wiki/coverage.svg)
+
 The suite connector is the main coordination center which forwards the local
 and remote messages. Messages processed by the suite connector will
 typically be related to telemetry data from the devices or command &