style(hook): clippy -D warnings clean on default + fifa17 features

Modernize manual nul-terminated byte strings to C-string literals (c"...")
at all Win32 GetModuleHandleA/GetProcAddress/getaddrinfo call sites (byte-identical),
drop two redundant SOL_SOCKET-as-i32 casts, remove a needless return in the fifa17
install path, and add a # Safety section to DllMain. Scope the FIFA-23-path
dead-code/unused-import lints (unused only under the fifa17 feature, stripped by the
linker) with a documented crate-level cfg_attr allow. Cross-verified: both the
default and fifa17 builds now pass clippy -D warnings and compile; probe and
capture_baseline still build.

openfut-hook/src/connectex_hook.rs

@@ -152,11 +152,11 @@ pub unsafe extern "system" fn hooked_wsaioctl(
 
 pub unsafe fn install_wsaioctl_hook() -> bool {
     use windows_sys::Win32::System::LibraryLoader::{GetModuleHandleA, GetProcAddress};
-    let ws2 = GetModuleHandleA(b"ws2_32.dll\0".as_ptr());
+    let ws2 = GetModuleHandleA(c"ws2_32.dll".as_ptr().cast());
     if ws2.is_null() {
         return false;
     }
-    let fn_ptr = match GetProcAddress(ws2, b"WSAIoctl\0".as_ptr()) {
+    let fn_ptr = match GetProcAddress(ws2, c"WSAIoctl".as_ptr().cast()) {
         Some(f) => f as *mut u8,
         None => return false,
     };