Remove /index.json redirect and allow customizable config server by env

src/lib.rs

@@ -82,6 +82,7 @@ unsafe extern "win64" fn on_kurohttp_get(reg: *mut Registers, _: usize) {
     
     if let Some(result) = replacer.replace(url.as_str()) {
         println!("Redirecting to: {result}");
+        // TODO: Track https://doc.rust-lang.org/nightly/unstable-book/library-features/str-from-utf16-endian.html to replace widestring when stabilized
         let new_url = widestring::U16String::from_str(result.as_str());
         let new_wstr = PCWSTR::from_raw(new_url.as_ptr());
         std::ptr::copy_nonoverlapping(new_wstr.as_ptr(), wstr, new_wstr.as_wide().len() + 2);