[Feature][Connectors-v2] Optimize the size of CDC JAR Files

[hawk9821]

Purpose of this pull request

Extract the common connector-cdc-base module to reduce the size of the cdc JAR .

before

after

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

[Copilot]

Pull Request Overview

This PR extracts a common connector-cdc-base module to reduce individual CDC connector JAR sizes and updates discovery logic to load multiple URLs.

• Renames several connector mappings (e.g., connector-http → connector-http-base) and adjusts related tests for dynamic paths.
• Refactors AbstractPluginDiscovery and subclasses to handle lists of URLs when adding to classloaders and implements CDC-specific filtering.
• Adds connector-cdc-base to E2E tests and distribution assemblies, and scopes various dependencies as provided.

Reviewed Changes

Copilot reviewed 31 out of 31 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
seatunnel-plugin-discovery/.../plugin-mapping.properties	Updated connector keys to *-base versions
seatunnel-plugin-discovery/src/test/.../*DiscoveryTest.java	Refactored test setup to compute seatunnelHome at runtime
seatunnel-plugin-discovery/src/main/java/.../AbstractPluginDiscovery.java	Changed URL consumer to accept List<URL> and multi-URL logic
seatunnel-plugin-discovery/src/main/java/.../SeaTunnel*PluginDiscovery.java	Updated constructors to accept List<URL> consumer
seatunnel-e2e/.../ContainerUtil.java	Conditional copy of transform jars and added getProjectVersion()
seatunnel-e2e/.../connector-cdc-*/pom.xml	Added connector-cdc-base test dependency
seatunnel-dist/.../assembly-bin*.xml	Included connector-cdc-base in assemblies
seatunnel-dist/pom.xml	Added connector-cdc-base as provided dependency
seatunnel-core/.../FlinkExecution.java	Simplified classloader URL addition to batch accept
seatunnel-core/.../FlinkAbstractPluginExecuteProcessor.java	Updated URL consumer to batch add via reflection
seatunnel-connectors-v2/.../AbstractJdbcCatalog.java	Loads Oracle driver explicitly and handles ClassNotFoundException

Comments suppressed due to low confidence (2)

seatunnel-plugin-discovery/src/main/java/org/apache/seatunnel/plugin/discovery/AbstractPluginDiscovery.java:139

• Missing import for java.util.Collection, which is required for Collection::stream reference. Please add import java.util.Collection; at the top of the file.

                .flatMap(Collection::stream)

seatunnel-plugin-discovery/src/main/java/org/apache/seatunnel/plugin/discovery/AbstractPluginDiscovery.java:208

• The variable pluginJars is undefined in this scope, causing a compile error. It should likely reference the defined pluginJarPaths or another valid list; please correct the variable name.

                addURLToClassLoaderConsumer.accept(classLoader, (List<URL>) pluginJars);

[Hisoka-X]

Thanks @hawk9821