feat: implement comprehensive query paradigm zoo system (issue #62)

- Created extensible BaseQueryParadigm interface with standardized QueryResult format
- Implemented QueryParadigmRegistry for paradigm discovery and management
- Added 5 working paradigms: SQL, FTS, GraphQL, JSONPath, Natural Language
- Documented 9 additional paradigms: QBE, Batch Manipulation, Visual Query Builder, REST API, NoSQL, UNIX Pipeline, XPath/XQuery, RAG, Data Transformation
- Integrated full CLI interface: list, search, show, exec, categories commands
- Added comprehensive test suite with 23 test cases covering all components
- Auto-registration system enables easy addition of new paradigms
- Organized paradigms by category (structural, textual, semantic, visual, procedural, network) and complexity (beginner, intermediate, advanced)

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

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

markitect/query_paradigms/__init__.py

@@ -0,0 +1,17 @@
+"""
+Query Paradigms - A unified interface to explore different query approaches in MarkiTect.
+
+This module provides a "zoo" of query paradigms that demonstrates various ways
+to query and interact with MarkiTect data, helping users discover the most
+appropriate approach for their needs.
+"""
+
+from .registry import QueryParadigmRegistry
+from .base import BaseQueryParadigm, QueryResult
+from .paradigms import *
+
+__all__ = [
+    'QueryParadigmRegistry',
+    'BaseQueryParadigm',
+    'QueryResult'
+]