Clans: Emulator and server implementation

[ZephyrCodesStuff]

This PR implements the Sony Clans subsystem for the RPCS3 emulator.

Used in:

• PlayStation Home [NPIA00005]
• ?

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The source code for the server is available here and is licensed AGPLv3.

• It's written in Rust, with my best efforts in readability and documentation.
• Every feature not-pertaining to RPCS3 has been feature-gated at compile-time.
• Fully Dockerized deployment
• Ticket signature verification

NOTE: The server is fully compatible with the PS3 console as well, as it follows the PS3 Clans Library specification.

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The emulator code tries its best to follow on the steps of the RPCN client code wherever possible; both in the Client as well as the Settings and Config components.

Features:

• Clans client implementation in clans_client.[h,cpp]
• Syscalls implementation in sceNpClans.[h,cpp]
  • A couple of missing structs and/or enum members have been added in sceNp.h
• Qt GUI for selecting the desired Clans server to use (default: [HTTPS] clans.rpcs3.net)
  • Implemented in clans_settings_dialog.[h,cpp]
  • Prevents modifying during emulator usage
• clans.yml config file for persistence
  • Implemented in clans_config.[h,cpp]

[RipleyTom]

You also need to add the files to msvc projects.

[ZephyrCodesStuff]

Addressed a good chunk of the suggestions.

Current to-do list of what's left:

• CURL per-request
• Actual request instance spawning and handle tracking with a generator
  • CURL ptr could go in here (?)
• Ticket callback handling instead of busy loop
  • Handling case when ticket requesting fails

[ZephyrCodesStuff]

I've implemented an IDM for request handling and tested in-game -- everything seems fine and working. Clan search, membership status, sanity checks (don't join a clan you already are in, etc...). Ticket request failure is also now handled, meaning the game will display "Service Unavailable." if a ticket fails to be fetched.

Next step is now improving ticket requesting via callbacks!

[ZephyrCodesStuff]

Everything has been handled. Please let me know if there's anything left to fix!

[ZephyrCodesStuff]

Switched to fmt::split_sv

[Megamouse]

The last commit won't work reliably. Since you're passing a temporary object.
You'll have to create a local variable first and pass that

[ZephyrCodesStuff]

Oops- my bad, C++ things. Should be fixed!

[ZephyrCodesStuff]

Results of the latest commit, tested on my fork's Actions with public runners:

• Windows fails to build, it cannot find <curl/curl.h> as an include
• Linux GCC builds both on x86 and ARM
• macOS builds
• FreeBSD and Windows Clang failed to initialise the build environment altogether (not related to Clans)

Will investigate what's causing MSVC to fail.

[ZephyrCodesStuff]

Problem fixed and now Windows, Linux and macOS build successfully.

NOTE: Windows Clang fails due to an old-style C cast in wolfssl.