Fix/missingtypes (#1699)

* found a case where if the service type is not referenced we don't fail to handle things

* insert a diagnostic

* holy updated tests

* some missing types

Author: david-driscoll

src/DependencyInjection.Analyzers/Diagnostics.cs

@@ -70,7 +70,7 @@ internal static class Diagnostics
     public static DiagnosticDescriptor CouldNotFindServiceType { get; } = new(
         "RSGD0007",
         "Could not find service type",
-        "Could not find service type {0} {1} {2}",
+        "Could not find service type {0} {1}",
         Category,
         DiagnosticSeverity.Warning,
         true