- introduce support for specifying labels which will ignore PRs from being included in the changelog

- please note ignored changelogs can be still included i the changelog via the according placeholder
- fix count for categorizedPrs

configs_test/configuration_empty_all_placeholders.json

@@ -1,4 +1,4 @@
 {
-    "template": "${{CHANGELOG}}\n${{UNCATEGORIZED}}\n${{OWNER}}\n${{REPO}}\n${{FROM_TAG}}\n${{TO_TAG}}\n${{CATEGORIZED_COUNT}}\n${{UNCATEGORIZED_COUNT}}",
+    "template": "${{CHANGELOG}}\n${{UNCATEGORIZED}}\n${{IGNORED}}\n${{OWNER}}\n${{REPO}}\n${{FROM_TAG}}\n${{TO_TAG}}\n${{CATEGORIZED_COUNT}}\n${{UNCATEGORIZED_COUNT}}\n${{IGNORED_COUNT}}",
     "empty_template": "${{OWNER}}\n${{REPO}}\n${{FROM_TAG}}\n${{TO_TAG}}"
 }