Fixed Web Version, better performance and some gameplay additions

Godot has released 4.3 beta 3 which reintroduces single-threading which should fix most if not all issue that the web version of the game had! (There is still a little lag when the very first raider dies, godot is struggling with shader generation and caching)

Despite the issue being the threading in the last update I still tried to optimize the game as best as possible. I found new ways to save all graphics in a smaller and more easily accessible format for the gpu. Hopefull this will make the experience more smooth for everyone.

Since the last build uploaded the beginning of may, the following changes have been made:

- Rebalanced all costs for everything

- Lvl 10 Raider is a boss like wave that you should not take lightly (use the spawn 1 feature)

- After the lvl 10 Raider, there are infinite waves you can tackle, although you have finished the current actual content after defeating the lvl 10 Raider. In the feature, more systems will unlock at this point

- Reworked the chest UI and logic. Gear has been removed and only gold will go into the chest. The UI also actually works now.

- Added the first Core Talent (new System) which gives you passive mana

- A whole bunch of bugfixes, refactoring and optimizations.