Mouse exploration

[cyrmax]

This PR introduces a mouse-driven exploration mode to enhance spatial awareness on both the colony and world maps.
Key Changes:

• Mouse Exploration Toggle: Holding Left Ctrl now activates a mouse-tracking mode.
• Cursor-to-Tile Navigation: Moving the mouse cursor over the map triggers the same descriptive feedback as keyboard-based (arrow keys) navigation.
• Spatial Feedback: This feature allows users to bridge the gap between abstract coordinate feedback (from screen readers like NVDA) and the physical layout of the map.

Use Case: When used in conjunction with screen reader features (such as NVDA's audio mouse coordinates), this allows for a more intuitive understanding of the relative positions of objects, buildings, and terrain zones by physically "scanning" the game area with mouse.

[shane12300]

I like this idea, but their are a few issues with the execution.

At least on my system, when I hold control and move my mouse around, announcements come so quickly that nvda doesn't really read anything. That or nvda's default behaviur on the control key is muting them.

Also, could you rebase master onto this branch?