refactor: reorganize examples directory with topic-based subdirectories

Reorganize examples directory into logical topic-based subdirectories with
comprehensive documentation:

- templates/: ISO/ARC42 documentation templates
- asset-management/: Asset management prototypes and demos
- essays/: Long-form content examples
- invoicing/: Invoice generation examples
- plugins/: Plugin development examples
- issue-demos/: Issue prevention demonstrations
- design-patterns/: Design pattern examples

Each subdirectory includes a README.txt file with topic description and
contributor signatures based on file creation timestamps.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

examples/templates/README.txt

@@ -0,0 +1,13 @@
+Templates Collection
+
+This directory contains various document templates for different standards and frameworks:
+
+- TEMPLATE-ARC42.md: Software architecture documentation template following the arc42 standard
+- TEMPLATE-ISO14001.md: Environmental management system template based on ISO 14001
+- TEMPLATE-ISO27001-ISMS.md: Information security management system template for ISO 27001
+- TEMPLATE-ISO9001.md: Quality management system template following ISO 9001
+
+These templates provide structured starting points for creating compliant documentation
+in their respective domains.
+
+--worsch, 25-10-03