feat: Add GitHub Agentic Workflow for automated news generation

- Create news-article-generator.md with comprehensive agent instructions
- Generate compiled news-article-generator.lock.yml
- Configure riksdag-regering-mcp MCP server (32 tools)
- Support 5 article types (week-ahead, committee-reports, propositions, motions, breaking)
- Daily schedule with workflow_dispatch for manual triggers
- Safe outputs for PR creation with editorial review
- Full integration with 32 riksdag-regering-mcp tools
- The Economist style journalism guidelines
- Multi-language support (EN/SV)

Co-authored-by: pethers <1726836+pethers@users.noreply.github.com>

Author: Copilot

.gitattributes

@@ -0,0 +1 @@
+.github/workflows/*.lock.yml linguist-generated=true merge=ours