Implement Mock Database and Update JSON_TABLE syntax in Tests

- Added `MockDatabase` class for in-memory database operations to facilitate testing.
- Created `MockPDOStatement, `MockQueryStatement`, and `MockRunnableSelect` for simulating query executions.
- Updated `JsonTable.php` and related tests to adjust JSON_TABLE syntax with appropriate quoting.
- Updated `tests.php` for environment setup and adjusted PHPUnit bootstrap configuration.
- Included `symfony/dotenv` in `composer.json` to handle environment variables.

Refine type annotations in `RunnableSelect` methods for improved gene…

…rics handling

Update README with link to temporary tables documentation and add usa…

…ge details

Add support for temporary tables with `RunnableTemporaryTable` interf…

…ace and implementation

- Introduced `RunnableTemporaryTable` interface in `Builder`.
- Implemented `MySQLTemporaryTable` to handle lifecycle and functionality of temporary tables.
- Enhanced `Select` with `temporary()` method to create and manage temporary tables.
- Added comprehensive unit tests for `MockDatabase` to test DQL, DML, DDL stacks, and temporary table functionality.
- Updated `TableNameBuilder` and `MySQLSelect` to integrate new temporary table logic.

Expand AGENTS.md with detailed usage examples for table aliases, mass…

… inserts, field masking, and other advanced insert operations

Add JsonTable and related test

AliasReplacer: Also handle Table additions like `prefix#table_name FO…

…R SYSTEM_TIME ALL`

Refactor type annotations for improved PHPStan compatibility

Enhanced typing

Updated typing