(improvement)(launcher)Move langchain4j related classes from launcher-common to common.

common/src/main/java/dev/langchain4j/model/ChatModel.java

@@ -0,0 +1,30 @@
+package dev.langchain4j.model;
+
+public enum ChatModel {
+    ZHIPU("glm"),
+    ALI("qwen");
+
+    private final String modelName;
+
+    private ChatModel(String modelName) {
+        this.modelName = modelName;
+    }
+
+    public String toString() {
+        return this.modelName;
+    }
+
+    public static ChatModel from(String stringValue) {
+        ChatModel[] var1 = values();
+        int var2 = var1.length;
+
+        for (int var3 = 0; var3 < var2; ++var3) {
+            ChatModel model = var1[var3];
+            if (model.modelName.equals(stringValue)) {
+                return model;
+            }
+        }
+
+        throw new IllegalArgumentException("Unknown role: '" + stringValue + "'");
+    }
+}