[spark] Support CREATE TABLE LIKE

[Zouxxyy]

Purpose

Adds support for CREATE TABLE LIKE in Paimon Spark integration (Spark 3.4+). Introduces PaimonCreateTableLikeCommand and RewriteCreateTableLikeCommand to copy schema, partitioning, and properties from a source table. Supports SparkCatalog and SparkGenericCatalog. When source and target providers match, copies comment and properties; otherwise only copies the comment.

Tests

• DDLTestBase — CREATE TABLE LIKE with Paimon SparkCatalog
• DDLWithHiveCatalogTestBase — CREATE TABLE LIKE with SparkGenericCatalog
• PaimonFormatTableTest — FormatTable property copying

[LinMingQiang]

Is it possible to support creating a new table from a branch?

[Zouxxyy]

This is supported now. I added a test to verify CREATE TABLE LIKE works with a branch source like source_tbl$branch_test_branch under SparkCatalog, and the target table is created from the branch metadata rather than the main table metadata.