LightMaker

This update addresses a few QoL issues that made the light blocks a bit finicky.

• Sneaking now allows you to place a light block on another light block
• Markers are summoned when a light block is placed, making it feel more responsive and showing a marker when you use the last light in your hand
• Light markers are now summoned when you are holding a light block item in your off hand, in addition to your main.
• Light markers are summoned/checked for less often
• The marker summon/check frequency can be changed using the watch-period-in-ticks configuration option
  • defaults to 10 ticks