[Feature][Connector-V2] Support tail file source

[hailin0]

Purpose of this pull request

[Connector-V2] Support tail file source

Does this PR introduce any user-facing change?

How was this patch tested?

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config
• Update the release-note.

[Copilot]

Pull Request Overview

This PR adds a new tail file source connector (Connector-V2) to support tailing log files and includes several new classes and improvements for file scanning, change detection, and event processing. In addition, small adjustments were made to CDC connectors to improve configuration and event handling.

Reviewed Changes

Copilot reviewed 24 out of 26 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
FileMatcher.java	Adds file matching functionality with configurable scan depth and caching.
FileManager.java	Introduces file registry management and split assignment based on file changes.
FileHarvester.java	Implements file tailing with buffering, multiline support, and position management.
ChangedFiles.java	Provides utilities to detect added/removed files based on inode changes.
Utils.java	Adds utility methods including inode extraction and hostname/ip retrieval (note: one getParentDir variant returns null).
TailFileSourceState.java, TailFileSourceSplitEnumerator.java, TailFileSourceSplit.java, TailFileSourceReader.java, TailFileSourceFactory.java, TailFileSourceConfig.java, TailFileSource.java	New classes and configuration for the tail file source connector, handling split management, state snapshots, and source creation.
Various CDC connector files (SQL Server, Postgres, Debezium related)	Minor adjustments and enhancements for CDC event handling and configuration properties.

Files not reviewed (2)

• plugin-mapping.properties: Language not supported
• seatunnel-connectors-v2/connector-tailfile/pom.xml: Language not supported

Comments suppressed due to low confidence (1)

seatunnel-connectors-v2/connector-tailfile/src/main/java/org/apache/seatunnel/connectors/tailfile/source/Utils.java:51

• The method getParentDir(String... paths) is not implemented and always returns null, which may lead to NullPointerExceptions if invoked. Consider providing a proper implementation or removing the unused method.

public static File getParentDir(String... paths) { return null; }

[Copilot]

The error message contains a typo ('Field to tail file') which should be corrected to 'Failed to tail file' for clarity.

Suggested change

	log.error("Field to tail file {}", fileInode, e);
	log.error("Failed to tail file {}", fileInode, e);