refactor: Exclude Migu from the default engines set

Closed #213

Author: pan93412

Diff for: Cargo.lock

@@ -104,12 +104,14 @@ N-API 和 RESTful API 支援的引擎（以下簡稱「預設引擎集」）與
 | Bilbili Music    | `bilibili` |                                                                 | ✅         |
 | 酷狗音乐         | `kugou`    |                                                                 | ✅         |
 | 酷我音乐         | `kuwo`     | 目前僅支援 320kbps MP3                                          | ✅         |
-| 咪咕音乐         | `migu`     |                                                                 | ✅         |
+| 咪咕音乐         | `migu`     |                                                                 |            |
 | JOOX             | `joox`     | 需要設定 `joox:cookie`，見引擎文件。                            | ✅         |
 | YtDl             | `ytdl`     | 預設使用的 `youtube-dl` 後端是 `yt-dlp`，可設定 `ytdl:exe` 調整 | ✅         |
 | 第三方網易雲 API | `pyncm`    |                                                                 | ✅         |
 | QQ音乐          | `qq`       | 需要設定 `qq:cookie`，見引擎文件。                              | ✅         |
 
+- `migu` 的 API 壞掉了。等到有更好的 API 會再更新。
+
 #### 引擎文件
 
 - JOOX 引擎：<https://docs.rs/unm_engine_joox>

Diff for: README.md

@@ -16,7 +16,6 @@ unm_engine_bilibili = { version = "0.3.0", path = "../engines/bilibili" }
 unm_engine_joox = { version = "0.3.0", path = "../engines/joox" }
 unm_engine_kugou = { version = "0.3.0", path = "../engines/kugou" }
 unm_engine_kuwo = { version = "0.3.0", path = "../engines/kuwo" }
-unm_engine_migu = { version = "0.3.0", path = "../engines/migu" }
 unm_engine_pyncm = { version = "0.3.0", path = "../engines/pyncm" }
 unm_engine_qq = { version = "0.3.0", path = "../engines/qq" }
 unm_engine_ytdl = { version = "0.3.0", path = "../engines/ytdl" }

Diff for: api-utils/Cargo.toml

@@ -10,7 +10,7 @@ use unm_engine::executor::Executor;
 
 /// Build an [`Executor`] with all the official engines registered.
 ///
-/// Currently, it includes `bilibili`, `kugou`, `migu`, `pyncm`,
+/// Currently, it includes `bilibili`, `kugou`, `pyncm`,
 /// `ytdl`, `kuwo`, and `joox`.
 ///
 /// # Example
@@ -36,7 +36,6 @@ pub fn build_full_executor() -> Executor {
 
     push_engine!(bilibili: BilibiliEngine);
     push_engine!(kugou: KugouEngine);
-    push_engine!(migu: MiguEngine);
     push_engine!(pyncm: PyNCMEngine);
     push_engine!(ytdl: YtDlEngine);
     push_engine!(kuwo: KuwoEngine);