Drawing doesn't work on mobile chrome.

[julian-kunzig]

The plugin works well on desktop browsers such as chrome, firefox, safari etc.
But when I test the plugin on the mobile, I found out it stopped to work on mobile chrome. I could confirm it was working well on mobile firefox.
While debugging the plugin, I knew mobile chrome doesn't support the mouse events for leafletJS.
So for mobile chrome, need to use touch events instead of mouse events.