add codecov (#79)

.github/workflows/ScalaCI.yml

@@ -29,4 +29,9 @@ jobs:
         run: sbt +compile
 
       - name: Run Test
-        run: sbt test
\ No newline at end of file
+        run: sbt coverage test coverageReport
+
+      - name: Aggregate coverage report
+        run: sbt coverageAggregate
+      - name: Upload test coverage report
+        run: bash <(curl -s https://codecov.io/bash)

project/plugins.sbt

@@ -4,4 +4,5 @@ addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.1.2")
 addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.13")
 addSbtPlugin("org.jetbrains" % "sbt-ide-settings" % "1.1.0")
 addSbtPlugin("org.jetbrains" % "sbt-idea-plugin" % "3.12.5")
-addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.6.0")
\ No newline at end of file
+addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.6.0")
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.8.2")