v1.2 Various QoL fixes/improvements

V1.2 tries to address to unintuitive nature of the game. This update only includes QoL improvements and bug fixes:

• added arrows for inputs and outputs of resource buildings and crafters
• added hex tile ground to highlight what tiles get blocked by the new building
• added the 4 potions on top of the witch hut to make it more obvious where to deliver the potions to
• added icon to cauldrons to show the selected recipe
• added icon to show what ressource would be mined by resource building during preview
• added version number
• added the ability to close the pop window with Q/ESC
• added the ability to cancel the path tool with Q/ESC
• added the ability to close the menu with Q/ESC
• fixed an issue preventing the WebGL version to run properly
• fixed z-fighting in water shader
• fixed post processing (enabled it on the main camera...)
• fixed the stuck red highlight by the destruction tool on deselect