feat(evaluator): Allow to evaluate license sources together

While it is valuable to be able to evaluate the license rule seperately
per license source, some users do desire to evaluate only once per
license for all source. Introduce a toggle, which allows for that while
keeping the old behavior as default.

Signed-off-by: Frank Viernau <frank.viernau@gmail.com>

Author: fviernau

evaluator/src/main/kotlin/PackageRule.kt

@@ -202,14 +202,25 @@ open class PackageRule(
     /**
      * A DSL function to configure a [LicenseRule] and add it to this rule.
      */
-    fun licenseRule(name: String, licenseView: LicenseView, block: LicenseRule.() -> Unit) {
-        resolvedLicenseInfo.filter(licenseView, filterSources = true)
+    fun licenseRule(
+        name: String,
+        licenseView: LicenseView,
+        separateEvaluationPerSource: Boolean = true,
+        block: LicenseRule.() -> Unit
+    ) {
+        val effectiveResolveLicenseInfo = resolvedLicenseInfo.filter(licenseView, filterSources = true)
             .applyChoices(ruleSet.ortResult.getPackageLicenseChoices(pkg.metadata.id), licenseView)
-            .applyChoices(ruleSet.ortResult.getRepositoryLicenseChoices(), licenseView).forEach { resolvedLicense ->
+            .applyChoices(ruleSet.ortResult.getRepositoryLicenseChoices(), licenseView)
+
+        effectiveResolveLicenseInfo.forEach { resolvedLicense ->
+            if (separateEvaluationPerSource) {
                 resolvedLicense.sources.forEach { licenseSource ->
                     licenseRules += LicenseRule(name, resolvedLicense, setOf(licenseSource)).apply(block)
                 }
+            } else {
+                licenseRules += LicenseRule(name, resolvedLicense, resolvedLicense.sources).apply(block)
             }
+        }
     }
 
     fun issue(severity: Severity, message: String, howToFix: String) =