[INLONG-11352][SDK] Add readme

inlong-sdk/dirty-data-sdk/README.md

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+## Overview
+
+This SDK is used to collect dirty data and store it in a designated storage location.
+
+## Features
+
+### Independent SDK
+
+Independent SDK, not dependent on platform specific libraries (such as Flink), can be used by Agent,
+Data Proxy, Sort modules.
+
+### Scalable multiple data storage options
+
+Dirty data can be stored in various different storage locations (currently only supports sending to
+DataProxy).
+
+## Usage
+
+### Create DirtyDataCollector object
+
+```java
+        Map<String, String> configMap = new ConcurrentHashMap<>();
+        configMap.put(DIRTY_COLLECT_ENABLE, "true");
+        configMap.put(DIRTY_SIDE_OUTPUT_IGNORE_ERRORS, "true");
+        configMap.put(DIRTY_SIDE_OUTPUT_CONNECTOR, "inlong");
+        configMap.put(DIRTY_SIDE_OUTPUT_LABELS, "key1=value1&key2=value2");
+        configMap.put(DIRTY_SIDE_OUTPUT_LOG_TAG, "DirtyData");
+        Configure config = new Configure(configMap);
+
+        DirtyDataCollector collecter = new DirtyDataCollector();
+        collector.open(config);
+```
+
+### Collect dirty data
+
+```java
+    // In fact, the dirty data we encounter is often parsed incorrectly, 
+    // so we use byte [] as the format for dirty data.
+    byte[] dirtyData = "xxxxxxxxxyyyyyyyyyyyyyy".getBytes(StandardCharsets.UTF_8);
+    // Here, incorrect types can be marked, such as missing fields, type errors, or unknown errors, etc.
+    String dirtyType = "Undefined";
+    // Details of errors can be passed here.
+    Throwable error = new Throwable();
+    collector.invoke(dirtyData, dirtyType, error);
+```
+
+                                           |