Add whereContains, orWhereContains, whereNotContains, orWhereNotContains

[anderly]

Add:

• whereContains
• orWhereContains
• whereNotContains
• orWhereNotContains

Closes #148 and #99

[Copilot]

Pull Request Overview

This PR implements four new query builder methods for string containment filtering: whereContains, orWhereContains, whereNotContains, and orWhereNotContains. These methods provide OData filtering capabilities using the contains() function and indexof() function for negative matching.

Key changes:

• Added four new query builder methods with comprehensive test coverage
• Implemented corresponding grammar compilation methods to generate proper OData filter syntax
• Version bump to 0.10.2

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/Query/Builder.php	Implements the four new whereContains methods with proper method chaining
src/Query/Grammar.php	Adds grammar compilation methods to generate OData filter syntax
tests/Query/BuilderTest.php	Unit tests verifying correct OData query generation
tests/ODataClientTest.php	Integration tests with real data validating end-to-end functionality
composer.json	Version bump from 0.10.1 to 0.10.2

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