Fire rework & perch room preview update

Changes

🌟 New:

- Fire rework: changed the way fire spreads and damages ships.⚡
- Perch room preview: to celebrate the PixElated Fest, a preview version of the new Perch room is already available in this demo! Build mechanical birds to destroy enemy ships!

⚖ Balance:

- Increased supply stock in zones 5 and beyond.

🎆 Graphic:

- Improved positioning of large enemy ships.

🐞 Bugfix:

- Maybe fixed a bug that prevented the game from quitting correctly.

💻 UI:

- Add an fire icon on the hull bar when your ship is on fire
- “Auto-pause on fire” option now triggers only for the first fire ⚡
- Added F1 / F2 / F3 keyboard shortcuts for setting game speed to 1x / 2x / 4x
- Improved text legibility for items with long names in shop (like “Medium automaton center level 2”)

⚡ change inspired by the community & content creators

Fire rework

Before this update, fire was an all-or-nothing strategy: small amounts of fire were almost useless, and large amounts became impossible to counter. This update makes several changes to the way fire works to improve the balance.

- Now, each fire slowly produces damage to the ship's hull and possibly to the room in which it is located, depending on its power.
- Propagation has also been modified: each fire gradually gains in power. When it reaches a certain power, it spreads the fire to a surrounding tile.
- Conversely, fighting a fire will gradually reduce its power.