Chore/split workflows

[nuitsjp]

This pull request refactors our GitHub Actions workflows by moving the jobs for CodeQL analysis, dependency audit, and license checks from the main npm-ci.yml workflow into their own dedicated workflow files. This improves maintainability and clarity by separating concerns and ensuring each workflow runs independently on its own schedule. Additionally, unnecessary conditional checks and scheduled triggers have been removed from npm-ci.yml.

Workflow separation and scheduling:

• Created new workflow files: .github/workflows/codeql.yml, .github/workflows/dependency-audit.yml, and .github/workflows/licensed.yml, each with its own scheduled trigger and job definitions for CodeQL analysis, dependency auditing, and license checking respectively. [1] [2] [3]

Cleanup in npm-ci.yml:

• Removed the scheduled trigger and jobs for dependency audit, CodeQL analysis, and license checks from npm-ci.yml, so it now only handles linting, testing, and bundling. [1] [2]
• Eliminated unnecessary conditional checks (if: github.event_name != 'schedule') from job definitions in npm-ci.yml, since scheduled jobs have been moved. [1] [2] [3]

[nuitsjp]

@copilot コンフリクトを修正してください

[Copilot]

@nuitsjp I've opened a new pull request, #58, to work on those changes. Once the pull request is ready, I'll request review from you.