feat: add xeapi support and refactor eapi_decrypt to api_decrypt

- Added xeapi option to the API selection dropdown in api.html.
- Removed eapi_decrypt.html and created a new api_decrypt.html for unified API decryption.
- Implemented multi-crypto support in api_decrypt.html with corresponding UI changes.
- Created decrypt.js module to handle decryption logic for different crypto types including xeapi.
- Updated request.js to remove unnecessary debug logs and improve code clarity.
- Updated index.html to link to the new api_decrypt.html instead of the removed eapi_decrypt.html.

module/song_url_v1.js

@@ -53,5 +53,9 @@ module.exports = async (query, request) => {
   if (data.level == 'sky') {
     data.immerseType = 'c51'
   }
-  return request(`/api/song/enhance/player/url/v1`, data, createOption(query))
+  return request(
+    `/api/song/enhance/player/url/v1`,
+    data,
+    createOption(query, 'xeapi'),
+  )
 }