Standardize on .metadata as filename for GPU timeline

Author: solidpixel

.gitignore

@@ -10,7 +10,6 @@ pve
 build*
 
 # Data files and build outputs
-*.gputl
 *.log
 *.metadata
 *.perfetto

lglpy/timeline/gui/window.py

@@ -339,7 +339,7 @@ def load_file(self, trace_file, metadata_file=None):
         if not metadata_file:
             postfix = '.perfetto'
             if trace_file.endswith(postfix):
-                metadata_file = f'{trace_file[:-len(postfix)]}.gputl'
+                metadata_file = f'{trace_file[:-len(postfix)]}.metadata'
 
             if not os.path.exists(metadata_file):
                 metadata_file = None