Sven Co-op 5.26 Gamedata

[szGabu]

Hopefully it will be worth the wait.

This PR adds all the necessary gamedata for Sven Co-op 5.26. This means Fakemeta can now be used to manipulate entity data for whatever purpose is needed.

Combined with #1157, this gives AMXX the much-needed and substantial compatibility for Sven Co-op.

Like #1157, this gamedata is also gated by the bins' CRC, so the server won't crash if Sven Co-op is updated.

Small example in action, rename all zombies:

public ServerCommand_RenameTest()
{
    new iEnt;
    new iPointer = engfunc(EngFunc_AllocString, "Pepito the AMXX Monster");
    while((iEnt = engfunc(EngFunc_FindEntityByString, iEnt, "classname", "monster_zombie")) > 0)
    {
        if( pev_valid(iEnt) == 2 )
        {
            set_ent_data(iEnt, "CBaseMonster", "m_FormattedName", iPointer);
        }
    }
}

Special Thanks to:
@R4to0

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!! Note with a bit of off topic: While the necessary gamedata and offsets are provided, gamerules compatibility with Sven Co-op is still a to do. In the current implementation, attempting to get the gamerules object just returns garbage, and as I commented in Discord, I suspect this is also a case of Sven Co-op's Linux optimization flags that are not present in other Valve games but I could be wrong. Fixing this would also future proof other future Half-Life mods that may have the same problem.