add Brave Browser to MacOS and Windows

jupyter_lab_config.py

@@ -48,10 +48,10 @@ def find_flatpak_browser():
 def find_browser():
     # find a chromium-based browser on the system to use. 
     if platform.system() == "Windows":
-        # prefers Microsoft Edge on Windows
         cmds = (
-            "Microsoft/Edge/Application/msedge.exe",
             "Google/Chrome/Application/chrome.exe",
+            "BraveSoftware/Brave-Browser/Application/brave.exe",
+            "Microsoft/Edge/Application/msedge.exe",
         )
         path_elements = map(Path, (environ["ProgramFiles"], environ["ProgramFiles(x86)"]))
 
@@ -62,7 +62,12 @@ def find_browser():
 
     elif platform.system() == "Darwin":
         # also prefers Google Chrome on MacOS due to popularity of the browser
-        cmds = ("Contents/MacOS/Google Chrome", "Contents/MacOS/Microsoft Edge")
+        cmds = (
+            "Contents/MacOS/Google Chrome", 
+            "Contents/MacOS/Microsoft Edge", 
+            "Contents/MacOS/Brave Browser",
+            "Contents/MacOS/Chromium",
+        )
         path_elements = [Path(f"/Applications/{Path(cmd).name}.app") for cmd in cmds]
 
     # use the first chromium-based browser found as the browser to run Jupyter in app mode