feature: support Oracle Batch Insert

[maple525866]

• I have read the CONTRIBUTING.md guidelines.
• I have registered the PR changes.

Ⅰ. Describe what this PR did

1. Problem Background
   Seata cannot support Oracle's INSERT ALL batch insert statements. For example, insert all into a (id) values(1) into a (id) values(2) SELECT 1 FROM DUAL will be parsed as OracleMultiInsertStatement, but DruidSQLRecognizerFactoryImpl does not support this statement type.

2. Solution

• Extend DruidSQLRecognizerFactoryImpl to add support for OracleMultiInsertStatement
• Extend OracleOperateRecognizerHolder to add methods specifically for handling multiple inserts
• Create OracleMultiInsertRecognizer and use ast.getEntries() to obtain insert items. It supports parsing multiple INSERT INTO clauses and correctly handles various data types (NULL, parameter placeholders, sequences, etc.)

3. Verification Functionality -> Created OracleMultiInsertRecognizerTest containing 11 test cases:

• Basic functional testing: SQL type, table name, table alias
• Column processing testing: Insert column retrieval, empty column detection
• Data row testing: Basic data, NULL values, parameter placeholders, primary key processing
• Complex scenario testing: Multi-table inserts, complex statements, edge cases
• Interface consistency testing: Ensures compliance with the Seata interface specification

Ⅱ. Does this pull request fix one issue?

fixes #7607

Ⅲ. Why don't you add test cases (unit test/integration test)?

UT have been added

Ⅳ. Describe how to verify it

mvn clean test

Ⅴ. Special notes for reviews

Currently, only single-table Oracle INSERT batching is supported. I don't believe multi-table support is necessary because branching transactions can be useful.❤️

[codecov]

Codecov Report

❌ Patch coverage is 66.34615% with 35 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.25%. Comparing base (b6af418) to head (ecd619b).

Files with missing lines	Patch %	Lines
...rser/druid/oracle/OracleMultiInsertRecognizer.java	68.04%	19 Missing and 12 partials ⚠️
...sqlparser/druid/DruidSQLRecognizerFactoryImpl.java	50.00%	2 Missing and 1 partial ⚠️
...er/druid/oracle/OracleOperateRecognizerHolder.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #7675      +/-   ##
============================================
- Coverage     61.29%   61.25%   -0.04%     
  Complexity      666      666              
============================================
  Files          1314     1315       +1     
  Lines         49853    49957     +104     
  Branches       5874     5899      +25     
============================================
+ Hits          30556    30601      +45     
- Misses        16516    16563      +47     
- Partials       2781     2793      +12     

Files with missing lines	Coverage Δ
...er/druid/oracle/OracleOperateRecognizerHolder.java	87.50% <0.00%> (-12.50%)	⬇️
...sqlparser/druid/DruidSQLRecognizerFactoryImpl.java	81.81% <50.00%> (-5.03%)	⬇️
...rser/druid/oracle/OracleMultiInsertRecognizer.java	68.04% <68.04%> (ø)

... and 7 files with indirect coverage changes

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[YoWuwuuuw]

By default, only the insert all syntax of Oracle Batch Insert and the same column situation is supported. The same effect can be achieved by adding multiple values ​​clauses to a normal insert. Are there plans to support more in the future?

[maple525866]

Currently, we only support batch insert of multiple columns (same columns) in a single table. We will continue to support this in the future.

[maple525866]

First, thanks to @YoWuwuuuw for the bug report.❤️

For now, I think we can start with basic support, like this pull request, which supports batch inserts for multiple columns in a single table.

However, for other scenarios, such as support for insert-first syntax and ConditionalInsertClause, further support can be implemented through other pull requests.

For multi-table scenarios, I don't think support is necessary at this time.