update shortest-path to v1.3 (#2222)

- Adds path colour options
- Adds path tile counter
- Adds option to set/clear the path target in the scene (shift right-click)
- Adds option to set path start position (PS: set your recalculate distance considerably high to use this option)
- Adds a plugin icon
- Fixes offset world map tile drawing
- Fixes missing fullscreen world map drawing

plugins/shortest-path

@@ -1,2 +1,2 @@
 repository=https://github.com/Skretzo/shortest-path.git
-commit=f6073d99e00e3d06d62d6d41d506181dcee6be04
+commit=57e0271247d58a605ba602e8bda597e5575aaaae