support (Software) issues

Add 65536 size support for maps

### Description I propose using the 65536 size for maps - increasing their dimensions - without modifying `vphysics.dll`, so as to avoid the legal issues surrounding permission to edit the physics. We can't add support of V25 bsp, but we can create own. Test on HL2 (sorry for sound, its pitched and idk why): https://youtu.be/vTNNo9ul4yI <details> <summary>At least, ficool2 said that it was possible:</summary> <img width="693" height="106" alt="Image" src="https://github.com/user-attachments/assets/1e7a4e54-1e59-454f-bfbe-bfb503619b92" /> <img width="689" height="77" alt="Image" src="https://github.com/user-attachments/assets/dd741d1d-1a49-4fa2-b564-6312664a0a2d" /> </details> I tested this code in combined maps from HL2 as one map [d1_trainstation_01_03.zip](https://github.com/user-attachments/files/33028110/d1_trainstation_01_03.zip) with: - d1_trainstation_01 - d1_trainstation_02 - d2_coast_03 - Big empty test 65k map I used patched vbsp++, stock vvis++, stock vrad++ on fast preset, thats why the time of compilations is very long. base.fgd *Up grid size in Hammer. Hammer allows you to set any grid size.* ```diff -@mapsize(-16384, 16384) +@mapsize(-32768, 32768) ``` The first error: ``` Host_EndGame: Map coordinate extents are too large!! Check for errors! ``` [public/worldsize.h](https://github.com/ValveSoftware/source-sdk-2013/blob/master/src/public/worldsize.h#L19) *MAX_COORD_INTEGER allow compile 65536 size maps, using vbsp.exe.* ```diff -#define MAX_COORD_IN