Add GH workflows to automate adding pull requests and issues to organizational projects and convert the PR validation workflow to reusable

[dshevtsov]

This pull request refactors and improves the GitHub Actions workflows for PR validation, project automation, and artifact handling. The main changes include splitting workflows for better modularity, introducing workflow calls with inputs, and automating the addition of PRs and issues to organizational projects. These updates enhance maintainability, flexibility, and automation in the CI/CD process.

Workflow modularization and refactoring

• Introduced a new workflow pr-validation.yml that calls the validation workflow using workflow_call and passes required inputs (pr_number, base_ref), replacing direct PR triggers. (.github/workflows/pr-validation.yml, .github/workflows/pr-validation.ymlR1-R12)
• Refactored validate-pr.yml to accept inputs for PR number and base branch, updating all relevant steps to use these inputs instead of GitHub context variables. (.github/workflows/validate-pr.yml, [1] [2] [3] [4] [5]
• Updated artifact upload logic to handle skipped validations, ensuring lint results are always available for downstream workflows. (.github/workflows/validate-pr.yml, .github/workflows/validate-pr.ymlR161-R169)

Project automation improvements

• Added new workflows (add-to-project-board.yml and add-to-project_job.yml) to automatically add PRs and issues to their respective organizational project boards using the actions/add-to-project action. (.github/workflows/add-to-project-board.yml, [1]; .github/workflows/add-to-project_job.yml, [2]

Workflow naming and trigger updates

• Renamed the workflow referenced in pr-comment.yml from "Validate pull request" to "PR validation" to match the new workflow names and triggers. (.github/workflows/pr-comment.yml, .github/workflows/pr-comment.ymlL5-R5)

[Copilot]

Pull Request Overview

This PR refactors the GitHub Actions workflow architecture by converting the validation workflow into a reusable workflow that can be called by other workflows. It also introduces new workflows for adding pull requests and issues to organizational project boards.

• Converted validate-pr.yml from a direct pull request trigger to a reusable workflow_call workflow with input parameters
• Created pr-validation.yml as the new entry point workflow that calls the refactored validation workflow
• Added workflows for automatically adding PRs and issues to organizational project boards

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/validate-pr.yml	Converted to reusable workflow with workflow_call trigger, accepting pr_number and base_ref as inputs; updated all references from github.event.pull_request to use input parameters
.github/workflows/pr-validation.yml	New entry point workflow that triggers on pull requests and calls the refactored validation workflow with appropriate parameters
.github/workflows/pr-comment.yml	Updated workflow name reference from "Validate pull request" to "PR validation" to match the new entry point workflow
.github/workflows/add-to-project_job.yml	New reusable workflow job for adding items to organizational project boards based on event type
.github/workflows/add-to-project-board.yml	New workflow that triggers on PR/issue open events and calls the project board workflow

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