refactor: restructure Flink engine modules and update UI

1. Split Flink engine into separate modules:
   - datavines-engine-flink-config
   - datavines-engine-flink-jdbc
   - datavines-engine-flink-transform

2. Update UI components:
   - Add FlinkConfiguration component
   - Update CreateConfig to support Flink configuration
   - Update localization files

datavines-engine/datavines-engine-plugins/datavines-engine-flink/HEADER

@@ -0,0 +1,14 @@
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License.  You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

datavines-engine/datavines-engine-plugins/datavines-engine-flink/datavines-engine-flink-config/pom.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You under the Apache License, Version 2.0
+    (the "License"); you may not use this file except in compliance with
+    the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>datavines-engine-flink</artifactId>
+        <groupId>io.datavines</groupId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>datavines-engine-flink-config</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.datavines</groupId>
+            <artifactId>datavines-engine-core</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.datavines</groupId>
+            <artifactId>datavines-engine-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.datavines</groupId>
+            <artifactId>datavines-engine-flink-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-core</artifactId>
+            <version>${flink.version}</version>
+        </dependency>
+    </dependencies>
+</project>

datavines-engine/datavines-engine-plugins/datavines-engine-flink/datavines-engine-flink-config/src/main/java/io/datavines/engine/flink/config/FlinkConfiguration.java

@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.datavines.engine.flink.config;
+
+import io.datavines.common.config.BaseConfig;
+
+public class FlinkConfiguration extends BaseConfig {
+
+    private String jobName;
+    private String checkpointPath;
+    private int checkpointInterval = 10000; // default 10s
+
+    @Override
+    public String getType() {
+        return "FLINK";
+    }
+
+    public String getJobName() {
+        return jobName;
+    }
+
+    public void setJobName(String jobName) {
+        this.jobName = jobName;
+    }
+
+    public String getCheckpointPath() {
+        return checkpointPath;
+    }
+
+    public void setCheckpointPath(String checkpointPath) {
+        this.checkpointPath = checkpointPath;
+    }
+
+    public int getCheckpointInterval() {
+        return checkpointInterval;
+    }
+
+    public void setCheckpointInterval(int checkpointInterval) {
+        this.checkpointInterval = checkpointInterval;
+    }
+}