WIP: Add full support for coverlet

Author: AdmiringWorm

Source/Cake.Recipe/Content/addins.cake

@@ -4,7 +4,6 @@
 
 #addin nuget:?package=Cake.Codecov&version=1.0.1
 #addin nuget:?package=Cake.Coveralls&version=1.1.0
-#addin nuget:?package=Cake.Coverlet&version=2.5.4
 #addin nuget:?package=Portable.BouncyCastle&version=1.8.5
 #addin nuget:?package=Cake.Email&version=2.0.0&loaddependencies=true
 #addin nuget:?package=Cake.Incubator&version=7.0.0

Source/Cake.Recipe/Content/coverage.cake

@@ -0,0 +1,10 @@
+public enum CoverageToolType
+{
+    None = 0,
+    Auto,
+    CoverletAuto,
+    CoverletCollector,
+    CoverletConsole,
+    CoverletMSBuild,
+    OpenCover
+}