fix: make pystray a core dependency on Windows instead of optional extra

The tray icon should always appear on Windows, not only when installed
with the [tray] extra.

server/pyproject.toml

@@ -48,6 +48,8 @@ dependencies = [
     "opencv-python-headless>=4.8.0",
     "websockets>=13.0",
     "just-playback>=0.1.7",
+    "pystray>=0.19.0; sys_platform == 'win32'",
+    "Pillow>=10.4.0; sys_platform == 'win32'",
 ]
 
 [project.optional-dependencies]
@@ -80,10 +82,6 @@ perf = [
     "bettercam>=1.0.0; sys_platform == 'win32'",
     "windows-capture>=1.5.0; sys_platform == 'win32'",
 ]
-tray = [
-    "pystray>=0.19.0; sys_platform == 'win32'",
-    "Pillow>=10.4.0; sys_platform == 'win32'",
-]
 
 [project.urls]
 Homepage = "https://git.dolgolyov-family.by/alexei.dolgolyov/wled-screen-controller-mixed"