build: rebrand output artifacts to Oak and fix macOS QML deployment

- Rename macOS bundle output from Olive.app to Oak.app.
- Rename editor binary to oak-editor and render worker to oak-render-worker.
- Rename crash handler output to oak-crashhandler.
- Update worker lookup, NSIS installer, Linux desktop/AppRun, crashhandler
  symbol paths, and documentation for the new binary names.
- Update CD workflow paths and add -qmldir flags to macdeployqt so QtQuick
  / QML plugins required by KDDockWidgets are bundled, fixing the launch
  crash on macOS.
- Update user-facing GitHub URLs to OakVideoEditorCommunity/oak.

app/packaging/linux/AppRun

@@ -20,16 +20,16 @@
 
 APPDIR=$(readlink -f $(dirname "$0"))
 
-# Custom AppRun that ensures the AppImage doesn't dismount before olive-crashhandler exits
+# Custom AppRun that ensures the AppImage doesn't dismount before oak-crashhandler exits
 
 # Run main program
-"$APPDIR/usr/bin/olive-editor" "$@"
+"$APPDIR/usr/bin/oak-editor" "$@"
 
 # Wait arbitrary amount of time
 sleep 5
 
-# While olive-crashhandler exists, keep sleeping
-while [[ $(ps -aux | grep olive-crashhandler | grep -v grep) ]]
+# While oak-crashhandler exists, keep sleeping
+while [[ $(ps -aux | grep oak-crashhandler | grep -v grep) ]]
 do
 	sleep 5
 done