fix: Make the plugin ID explicit

Otherwise the `OrtPlugin` logic would use just "My" as the plugin ID
because the parent class name gets stripped.

Signed-off-by: Sebastian Schuberth <[email protected]>

Author: sschuberth

src/main/kotlin/MyPackageManager.kt

@@ -32,6 +32,7 @@ import org.ossreviewtoolkit.plugins.api.OrtPlugin
 import org.ossreviewtoolkit.plugins.api.PluginDescriptor
 
 @OrtPlugin(
+    id = "MyPackageManager",
     displayName = "My Package Manager",
     description = "A template for implementing an ORT package manager plugin.",
     factory = PackageManagerFactory::class