Update Vulkan headers to 1.4.318

Includes updating generator to parse latest XML which has some changes
for marking deprecated commands that we need to handle.

Includes regenerating the common code to use the latest XML.

Author: solidpixel

generator/generate_vulkan_common.py

@@ -141,11 +141,18 @@ def load_api_core_versions(self, root: ET.Element):
             api_version = feature.get('number')
 
             # Get the commands added in this API version
-            commands = feature.findall('.//command')
-            for command in commands:
-                fname = command.get('name')
-                assert fname not in self, fname
-                self[fname] = [(api_version, None)]
+            parents = feature.findall(".//command/..")
+            for parent in parents:
+                # Skip functions in deprecated blocks
+                if parent.tag == 'deprecate':
+                    continue
+
+                # Include all of the other blocks
+                commands = parent.findall("command")
+                for command in commands:
+                    fname = command.get('name')
+                    assert fname not in self, fname
+                    self[fname] = [(api_version, None)]
 
     def load_api_extensions(self, root: ET.Element):
         '''