Introduce protobuf-setup-plugins module

[alexander-yevsyukov]

This PR initiates the migration to common code base for configuring GenerateProtoTasks of a project.

Currently, we have two parts of code that do the same set of things for configuring GenerateProtoTasks. One part of code lives under buildSrc in the ProtoTaskExtensions.kt file. This code is used when building modules of Base and ToolBase that have Protobuf types. Another part is in the code of the Compiler and CoreJvm Compiler Gradle plugins.

We aim to have the same set of Gradle plugins that would be used for building Base and ToolBase and inside Compiler and CoreJvm Compiler Gradle plugins that configure Protobuf in a project.

The plugins introduced in new protobuf-setup-plugins module and other improvements are described in the sections below.

DescriptorSetFilePlugin

This plugin configures Protobuf generation tasks to produce descriptor set files and expose them as resources of the corresponding source set.

GeneratedSourcePlugin

This plugin makes GenerateProtoTask copy the produced sources under $projectDir/generated/ directory, and updates project compilation tasks accordingly.

Using MavenPublication for calculating MavenArtifact for a project

The Project.artifact(SourceSetName) extension function was improved to take a name of a project's MavenPublication instead of Project.name when creating corresponding instance of MavenArtifact. If a project is not published, the Project.name is used as before.

Consolidation of code related to Protobuf Gradle Plugin

The code related to configuring Protobuf Gradle Plugin was moved from plugin-base module to the protobuf-setup-plugins module.

runGradleBuild function got optional parameters

Optional parameters stdOutput and stdError were introduced to allow stream redirection at the usage sites to System.err when needed.

[Copilot]

Pull Request Overview

This PR introduces a new protobuf-setup-plugins module containing Gradle plugins for configuring Protocol Buffer compilation tasks. This consolidates previously duplicated code from buildSrc and Compiler Gradle plugins into reusable plugins.

Key Changes:

• Creates new protobuf-setup-plugins module with two main plugins: DescriptorSetFilePlugin and GeneratedSourcePlugin
• Migrates existing Protobuf-related code from various locations into the new module
• Updates project structure and dependency management to use the new common plugins

Reviewed Changes

Copilot reviewed 37 out of 39 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
settings.gradle.kts	Adds protobuf-setup-plugins module and reorganizes project includes
protobuf-setup-plugins/build.gradle.kts	New module build configuration with plugin publishing setup
protobuf-setup-plugins/src/main/kotlin/.../plugin/*	Core plugin implementations including DescriptorSetFilePlugin and GeneratedSourcePlugin
protobuf-setup-plugins/src/main/kotlin/.../gradle/*	Migrated utility classes and extensions for Protobuf operations
protobuf-setup-plugins/src/test/kotlin/.../plugin/*	Comprehensive test suite for the new plugins
plugin-base/src/main/kotlin/.../task/ProtobufTaskName.kt	Removed deprecated class (moved to new module)
plugin-base/src/main/kotlin/.../project/ProjectExts.kt	Enhanced artifact resolution with Maven publication support
jvm-tool-plugins/*	Updates to use standardized task names and plugin constants
Various test files	Updates to import from new module locations

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[armiol]

@alexander-yevsyukov LGTM except for a minor comment.