- introduce new API adding support to extract additional PR labels from the PR message. This can also be used to organise the changelog in commitMode

- adjust RegExp to be executed in unicode mode, allows referencing a emoji via `.`
- introduce new testcase for emoji mode with label extractor

configs_test/configuration_commits_emoji.json

@@ -0,0 +1,37 @@
+{
+    "categories": [
+        {
+            "title": "## 🚀 Features",
+            "labels": ["🚀", "🌟"]
+        },
+        {
+            "title": "## 🐛 Fixes",
+            "labels": ["🐛"]
+        },
+        {
+            "title": "## 🧪 Tests",
+            "labels": ["🧪"]
+        },
+        {
+            "title": "## 💬 Other",
+            "labels": ["💬", "📖", "🚨"]
+        },
+        {
+            "title": "## 📦 Dependencies",
+            "labels": ["dependencies"]
+        }
+    ],
+    "pr_template": "${{TITLE}}",
+    "label_extractor": [
+        {
+            "pattern": "(.) (.+)",
+            "target": "$1"
+        }
+    ],
+    "transformers": [
+        {
+            "pattern": "(.) (.+)",
+            "target": "- $2"
+        }
+    ]
+}