feat: Windows compatibility support

[Thunder-Blaze]

Description

strfry currently only builds on Unix-like systems. This PR makes it build and run on Windows by introducing polyfills, adjusting build configurations, and bypassing Linux-specific APIs.

Update

• Build System: Adjusted Makefile to handle .exe extensions and use cross-platform perl -I flags.
• Polyfills & Stubs: Added #ifdef _WIN32 guards around POSIX-only APIs (like rlimit, syslog, and POSIX signal handlers) and introduced a getline() polyfill in cmd_import.cpp and cmd_upload.cpp.
• Network Initialization: Integrated WSAStartup in onAppStartup.cpp to properly initialize Winsock.
• LMDB Mapsize: Reduced the default LMDB mapsize in strfry.conf to 10GB, as Windows enforces stricter memory mapping limits compared to Linux.

Issue

• fixes Portability: Windows compatibility

Depends On

• feat: Windows support and submodule updates golpe#7
• After the golpe PR gets merged and the submodule gets bumped in strfry, it will be fully ready to get merged.

Testing

• Compiled and successfully executed strfry.exe on Windows 11 (x64).