Replace pkg_resources with packaging.version in examples

pkg_resources is not available in all environments; packaging.version.Version
is a direct drop-in replacement.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: linesight

examples/hello_world.py

@@ -11,7 +11,7 @@
 from cefpython3 import cefpython as cef
 import platform
 import sys
-from pkg_resources import parse_version
+from packaging.version import Version as parse_version
 
 
 def main():

examples/pywin32.py

@@ -16,7 +16,7 @@
 from cefpython3 import cefpython as cef
 
 import distutils.sysconfig
-from pkg_resources import parse_version
+from packaging.version import Version as parse_version
 import math
 import os
 import platform

examples/qt.py

@@ -18,7 +18,7 @@
 import os
 import platform
 import sys
-from pkg_resources import parse_version
+from packaging.version import Version as parse_version
 
 # GLOBALS
 PYQT4 = False

examples/screenshot.py

@@ -36,7 +36,7 @@
 """
 
 from cefpython3 import cefpython as cef
-from pkg_resources import parse_version
+from packaging.version import Version as parse_version
 import os
 import platform
 import subprocess

examples/tkinter_.py

@@ -26,7 +26,7 @@
 import os
 import platform
 import logging as _logging
-from pkg_resources import parse_version
+from packaging.version import Version as parse_version
 
 # Fix for PyCharm hints warnings
 WindowUtils = cef.WindowUtils()

examples/tutorial.py

@@ -6,7 +6,7 @@
 import platform
 import sys
 import threading
-from pkg_resources import parse_version
+from packaging.version import Version as parse_version
 
 # HTML code. Browser will navigate to a Data uri created
 # from this html code.

examples/wxpython.py

@@ -12,7 +12,7 @@
 import platform
 import sys
 import os
-from pkg_resources import parse_version
+from packaging.version import Version as parse_version
 
 # Platforms
 WINDOWS = (platform.system() == "Windows")