Support Lazy Connect

[currantw]

Summary

Adds support for lazy connection to the Valkey Glide C# client.

Description

This pull request add support for lazy connection to the Valkey Glide C# client. When lazy connect is enabled, the client is initialized without establishing network connections to the Valkey servers; instead, connections are only created when the first command is executed.

See Lazy Connect - Valkey Glide Wiki for more details, including how lazy connect works and important considerations.

Changes

• Update BaseClient and subclasses to lazily determine the server version. See description here of why this is necessary to enabled lazy connect.
• Add LazyConnect attribute to ConnectionConfiguration, StandaloneClientConfiguration, ClusterClientConfiguration, and ClientConfigurationBuilder.
• Add lazyConnect attribute to ConnectionConfig internal FFI struct.
• Add EagerConnect and LazyConnect tests to ClusterClientTests and StandaloneClientTests.
• Add ServerManager test helper class for adding/removing servers during integration tests.
• Add ConnectionInfo test helper class for retrieving the number of clients connected to a server.

Related Issues

• NodeJS: LazyConnect options on create client - phase 1 (python + node) valkey-glide#1652
• [EPIC] Lazy connect - phase2 valkey-glide#4350

[Copilot]

Pull Request Overview

This pull request adds lazy connection support to the Valkey Glide C# client, allowing clients to defer network connections until the first command is executed instead of establishing connections during initialization.

Key changes:

• Added LazyConnect configuration option to client builders and configuration classes
• Modified server version determination to be lazy rather than happening during client initialization
• Added comprehensive integration tests to verify lazy vs eager connection behavior

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/Valkey.Glide.IntegrationTests/TestUtils.cs	New utility class for counting client connections in tests
tests/Valkey.Glide.IntegrationTests/StandaloneClientTests.cs	Added lazy and eager connection tests for standalone client
tests/Valkey.Glide.IntegrationTests/ClusterClientTests.cs	Added lazy and eager connection tests for cluster client
sources/Valkey.Glide/Internals/FFI.structs.cs	Added LazyConnect field to FFI connection configuration
sources/Valkey.Glide/GlideClusterClient.cs	Refactored server version initialization to be lazy
sources/Valkey.Glide/GlideClient.cs	Refactored server version initialization to be lazy
sources/Valkey.Glide/ConnectionConfiguration.cs	Added LazyConnect property and methods to configuration classes
sources/Valkey.Glide/BaseClient.cs	Modified client creation flow and extracted common server version parsing
sources/Valkey.Glide/BaseClient.GenericCommands.cs	Updated to use lazy server version retrieval
rust/src/ffi.rs	Updated Rust FFI to handle lazy connect configuration
DEVELOPER.md	Fixed typo in filename reference

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[jbrinkman]

A few small changes.

[jbrinkman]