modularize sdk

[devcrocod]

• split sdk into core, client, server, closes Further split of this library into modules (e.g. api, client, server) #33
• added new targets, closes Support more targets for kotlin-sdk #188
• moved sample dependencies to lib.versions.toml
• samples configured as composite builds

Motivation and Context

How Has This Been Tested?

locally

Breaking Changes

No

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

[Copilot]

Pull Request Overview

This PR modularizes the Kotlin SDK by splitting it into separate modules (core, client, server) and reorganizes the project structure. The samples are configured as composite builds and now use shared version catalogs for dependency management.

• Splits the monolithic SDK into separate core, client, and server modules for better organization
• Configures sample projects as composite builds with shared dependency management
• Introduces centralized build configuration through custom Gradle plugins

Reviewed Changes

Copilot reviewed 63 out of 90 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
settings.gradle.kts	Adds new module includes and configures samples as composite builds
kotlin-sdk/build.gradle.kts	New umbrella module that combines core, client, and server modules
kotlin-sdk-core/build.gradle.kts	Core SDK module with multiplatform configuration
kotlin-sdk-client/build.gradle.kts	Client-specific functionality module
kotlin-sdk-server/build.gradle.kts	Server-specific functionality module
kotlin-sdk-test/build.gradle.kts	Test module configuration
samples/*/build.gradle.kts	Updated to use version catalog references
gradle/libs.versions.toml	Centralized dependency versions with sample dependencies
buildSrc/*	Custom Gradle plugins for publishing, multiplatform, and documentation

Files not reviewed (5)

• samples/kotlin-mcp-server/.idea/.gitignore: Language not supported
• samples/kotlin-mcp-server/.idea/gradle.xml: Language not supported
• samples/kotlin-mcp-server/.idea/kotlinc.xml: Language not supported
• samples/kotlin-mcp-server/.idea/misc.xml: Language not supported
• samples/kotlin-mcp-server/.idea/vcs.xml: Language not supported

Comments suppressed due to low confidence (1)

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/shared/Protocol.kt:442

• [nitpick] The removal of the explicit Unit return statement may be intentional cleanup, but could affect readability in complex exception handling blocks.

        }

[e5l]

lgtm