Port server to Linux and add Docker Compose deployment

Rebuilds (not Wine) the login/char/world servers natively for Linux via
CMake, and ships a single Docker image plus docker-compose stack (MariaDB +
3 servers) with all settings configurable via .env.

Linux portability:
- Src/Common/compat.h shims MSVC-only CRT calls (fopen_s, _strdup,
  strncpy_s, sprintf_s, SYSTEMTIME/GetLocalTime, WSAGetLastError, __cdecl)
  and adds a case-insensitive/backslash-tolerant path resolver for the
  Windows-authored STB/AIP data file paths.
- Fixed case-sensitive header includes and filenames (charserver.h vs
  CharServer.h, worldserver.h vs WorldServer.h, ../common vs ../Common).
- rose_inet_addr() resolves hostnames (not just literal IPs) for the
  server-to-server links, so docker-compose service names work.

Fixed three real bugs that only crashed on 64-bit Linux (silently tolerated
on 32-bit Windows):
- CIntStb::LoadSTB had an inverted fopen success/failure check, so STB game
  data (zones, items, etc.) was never actually loaded.
- GenerateCryptTables allocated its pointer table with sizeof(unsigned)
  instead of sizeof(unsigned*) -- a 1x vs 2x-size heap overflow on 64-bit.
- Crypto bit-twiddling relies throughout on signed-overflow-as-wraparound,
  which is UB in C++; GCC's -O3 exploited it and miscompiled
  GenerateCryptTables (Release-only crash). Fixed via -fwrapv.
Plus smaller fixes: off-by-one array bounds (inventory/storage/sell data),
SO_REUSEADDR on server sockets (containers restarting in the same netns hit
TIME_WAIT otherwise), and a va_list reused across multiple vprintf/vfprintf
calls in Log() that garbled every formatted log line on the Linux ABI.

Docker:
- CMakeLists.txt builds all three servers + shared Common code.
- Dockerfile: multi-stage build, one runtime image for all three servers,
  server role selected via `command: [login|char|world]`.
- docker-compose.yml: MariaDB (auto-imports database sql files/ on first
  run) + login/char/world (single channel), config rendered from
  docker/conf/*.conf.tmpl via envsubst at container start.
- .env.example documents every setting (ports, server names, rates,
  inter-server passwords, PUBLIC_HOST for internet-facing deployments).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Src/Common/sockets.h

@@ -31,15 +31,16 @@
     #endif
     #define FD_SETSIZE	1024
 #else
-     #include <winsock2.h>
     #include <unistd.h>
     #include <netinet/in.h>
     #include <sys/socket.h>
     #include <sys/types.h>
     #include <arpa/inet.h>
     #include <sys/ioctl.h>
+    #include <netinet/tcp.h>
     #include <cstdarg>
     #include <errno.h>
+    #define WSAGetLastError() errno
     #define SOCKET int
     #define INVALID_SOCKET -1
     #define SOCKET_ERROR -1
@@ -69,7 +70,9 @@
 #include "rosecrypt.hpp"
 #include "config.h"
 #include "database/database.h"
+#ifdef _WIN32
 #pragma comment(lib, "Ws2_32.lib")
+#endif
 // Just some defs for easier use
 typedef char SBYTE;
 typedef unsigned char BYTE;
@@ -79,10 +82,18 @@ typedef long SDWORD;
 typedef unsigned long DWORD;
 typedef long long SQWORD;
 typedef unsigned long long QWORD;
+#ifdef _WIN32
 typedef unsigned __int8			byte;
 typedef unsigned __int16		word;
 typedef unsigned __int32		dword;
 typedef unsigned __int64		qword;
+#else
+typedef unsigned char			byte;
+typedef unsigned short			word;
+typedef unsigned int			dword;
+typedef unsigned long long		qword;
+typedef unsigned int			UINT;
+#endif
 typedef char*					strings;
 using std::cout;
 using std::endl;