feat(model): Add GitHub and GitLab to Purl types

This allows mapping those Purl types from the corresponding
`PackageProvider`s.

See https://github.com/package-url/purl-spec/blob/master/PURL-TYPES.rst.

Signed-off-by: Nicolas Nobelis <[email protected]>

Author: nnobelis

model/src/main/kotlin/utils/Extensions.kt

@@ -143,6 +143,8 @@ enum class PurlType(private val value: String) {
     DEBIAN("deb"),
     DRUPAL("drupal"),
     GEM("gem"),
+    GITHUB("github"),
+    GITLAB("gitlab"),
     GOLANG("golang"),
     MAVEN("maven"),
     NPM("npm"),