Add debugging statements to startup code to profile it

[laurent22]

There have been more complains about the app being slow to start recently. Not sure if it's due to a recent change or something else but we should investigate.

• We should add debug statements on starting code to find out which parts are slow
• Then an option to enable/disable this feature (disabled by default)

Spec

• We can use something like timerPush/timerPop from utils/time.ts to wrap statements. For example:

timePush('ClipperServer.instance().initialize');
ClipperServer.instance().initialize(actionApi);
timerPop();

• All statements should be logged to a separate file in the profile folder, for example profiling.txt. timerPush/timerPop will have to be modified to log to file.