feat: set up Python project structure with pyproject.toml

- Add pyproject.toml with core and dev dependencies
- Configure Ruff for linting and formatting
- Configure MyPy for strict type checking
- Configure pytest with asyncio support
- Create src/polymarket_insider_tracker package structure
- Add py.typed marker for PEP 561 compliance
- Add pre-commit hooks configuration
- Add comprehensive .gitignore
- Create test directory structure with basic tests

Closes #25

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/polymarket_insider_tracker/__init__.py

@@ -0,0 +1,3 @@
+"""Polymarket Insider Tracker - Detect insider activity on Polymarket."""
+
+__version__ = "0.1.0"

src/polymarket_insider_tracker/alerter/__init__.py

@@ -0,0 +1 @@
+"""Alerting layer - Real-time notification delivery."""

src/polymarket_insider_tracker/detector/__init__.py

@@ -0,0 +1 @@
+"""Anomaly detection layer - Suspicious activity identification."""

src/polymarket_insider_tracker/ingestor/__init__.py

@@ -0,0 +1 @@
+"""Data ingestion layer - Real-time Polymarket trade streaming."""

src/polymarket_insider_tracker/profiler/__init__.py

@@ -0,0 +1 @@
+"""Wallet profiler layer - Blockchain analysis for trader intelligence."""

src/polymarket_insider_tracker/storage/__init__.py

@@ -0,0 +1 @@
+"""Storage layer - Database schemas and repositories."""