Add EF Core 9 support

[okramarenko]

No description provided.

[Copilot]

Pull request overview

This pull request upgrades the SingleStore EF Core provider from EF Core 8 to EF Core 9. This is a major version upgrade that includes updating the .NET SDK to 9.0, updating all EF Core package dependencies to 9.0.0, and adapting to breaking changes in the EF Core 9 API surface.

Changes:

• Updated .NET SDK from 8.0 to 9.0 and target framework for tests from net8.0 to net9.0
• Updated EF Core dependencies from 8.0.13 to 9.0.0 and SingleStoreConnector from 1.2.0 to 1.3.0
• Converted synchronous test methods to async patterns throughout the test suite
• Adapted to EF Core 9 API changes including query compilation context, parameter processors, and expression handling
• Implemented new EF Core 9 features like migration database locking and precompiled query infrastructure
• Fixed various bugs in regex patterns, variable naming, and expression handling
• Added new test attributes and query translation methods

Reviewed changes

Copilot reviewed 148 out of 212 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
global.json, Version.props, Directory.Packages.props	Updated SDK version to 9.0.100, package versions to EF Core 9.0.0
Multiple test files	Converted test fixtures to IAsyncLifetime, changed sync methods to async
Query/Internal/*.cs	Updated query compilation context and parameter processor signatures for EF Core 9
Query/ExpressionVisitors/*.cs	Added bitwiseexpression visitor, updated expression handling
Migrations/Internal/*.cs	Implemented migration database locking, updated constructor signatures
Storage/Internal/*.cs	Fixed connection cloning to mark as owned
Infrastructure/*.cs	Added DefaultUtf8 collation properties, updated server version support
Extensions/*.cs	Added JsonOverlaps function, ComplexTypeProperty extensions

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