Mobile touch events to work on leaflet 1.7

[makeus]

Description

Fixes problem with map.on('touch') events not working on leaflet >= 1.7 by changing the code to use L.DomEvent instead.

Fixes issues

• FreeDraw not working on Android #171
• Free Draw stopped Working on Ipad With IOS 13 #161
• Freedraw not working on iOS 13 #155
• Add mobile support #3

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Tested drawing on leaflet 1.7.1 and leaflet 1.5.1

Desktop (default and mobile touch simulation)

• Chrome 99.0.
• Firefox 98.0

Mobile

• Android 12 Firefox 99.1 and Chrome 100.0
• iOS 15.0 Safari

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[stell]

What can we do to get this project going? Polygon display is also causing trouble. Is FreeDraw dead or can someone take over?