Add integration to drag ruler module if installed

[wake42]

What

Provide a RuneQuest Glorantha speed provider to the Drag Ruler module if it is installed. By default show half MOV (where the actor still can attack) as green, and full MOV as yellow. Beyond that it shows red.

There is also a Drag Ruler setting for an optional rule that allows actors to move beyond the MOV limit. The setting is a multiplier that determines how long the actor is allowed to move. For example a token with MOV 8 can normally move 8 * 3m = 24m. If the "Sprint Speed Multiplier" is set to 3 then the token can move 8 * 3m * 3 = 72m. The extended range is shown as orange.

Add Drag Ruler as a recommended relationship to the system.