Add WinPython support and testing

[karthiknadig]

Fixes #96

Introduce support for detecting WinPython environments.

Changes

• Add new \pet-winpython\ crate for WinPython environment detection
• Add \WinPython\ to \PythonEnvironmentKind\ and \LocatorKind\ enums
• Integrate WinPython locator into the locator chain
• Update JSONRPC documentation

Detection Strategy

WinPython environments are identified by:

1. Marker files: .winpython\ or \winpython.ini\ in parent directories
2. Directory naming pattern: \WPy64-, \WPy32-, or \WPy-*\
3. Python folder naming: \python-X.Y.Z.amd64\ or \python-X.Y.Z\

Testing

Added 14 tests covering directory/folder name patterns, version extraction, marker file detection, and locator trait verification.

[github-actions]

Performance Report (Linux) 🚀

Metric	PR	Baseline	Delta	Change
Server Startup	1ms	1ms	0ms	0%
Full Refresh	470ms	589ms	-119ms	-20.0%

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)

[github-actions]

Test Coverage Report (Linux)

Metric	Value
Current Coverage	56.8%
Base Branch Coverage	56.7%
Delta	.1% ✅

---

Coverage increased! Great work!

[github-actions]

Test Coverage Report (Windows)

Metric	Value
Current Coverage	53.68%
Base Branch Coverage	52.77%
Delta	0.91% ✅

---

Coverage increased! Great work!

[github-actions]

Performance Report (Windows) 🚀

Metric	PR	Baseline	Delta	Change
Server Startup	15ms	15ms	0ms	0%
Full Refresh	2939ms	11143ms	-8204ms	-73.6%

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)

[github-actions]

Performance Report (macOS)

Metric	PR	Baseline	Delta
Server Startup	1231ms	905ms	326ms
Full Refresh	64158ms	49485ms	14673ms

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)