Refactor OverworldEditor copy functionality to use selected points

- Updated the `Copy` method in `OverworldEditor` to utilize selected points instead of tiles for copying tile16 IDs to the clipboard, enhancing the selection mechanism.
- Improved the logic for determining the width and height of the selection based on the selected points, ensuring accurate tile copying.
- Adjusted the `DrawSelectRect` method in `Canvas` to correctly calculate local map indices, refining the tile selection process.
- Added a new configuration option in `Canvas` to control clamping behavior for local maps, providing more flexibility in canvas settings.

test/CMakeLists.txt

@@ -252,6 +252,8 @@ endif()
         target_link_options(yaze_test PRIVATE /STACK:8388608)  # 8MB stack
       elseif(MINGW)
         target_link_options(yaze_test PRIVATE -Wl,--stack,8388608)
+      else()
+        target_link_options(yaze_test PRIVATE -Wl,-w)
       endif()
   endif()
 endif()