Update 135 - startup panel replacement

Finally upgraded unity from 2019.2.2 to 2022.3.6 (close to what is used for Rust). This upgrade required moving the startup panel screen/input functionality within fortify because it was removed after 2019.2.
Edit for mac users: OS 10.14+ is now required, I've created an Update134 branch if you're affected.

Runtime rebinding required switching to unity's new input system which unfortunately can't transfer old custom keybinds. Benefits include the ability for UI text to display custom keybinds and much better controller support... if there's enough interest.

Hopefully this upgrade will fix the rare startup problems.
If you know anyone affected please get them to give it a try.

- added railroad planter triangle

- added visual range to planters that show the new stack blocking collider, it isn't functional yet but will be included in a complete overhaul of the placement blocking system that is coming soon

- removed rectangle select mode, hold MMB to use this type of selection (added a keybind option)

- fixed missing hopper button, sorry about that

- added missing bottom part of double door frames

- updated armor door models with smaller more accurate hatch size

- fixed bug preventing placing pipes when "wire power" option is selected

- added spring to resource count for pressure pads