ファイルと画像認識処理の改善 (#5690)

* dimensions制限とリファクタ

* comment

* 不要な変更削除

* use fromFile など

* Add probe-image-size.d.ts

* えーCRLFで作るなよ…

* Update src/@types/probe-image-size.d.ts

Co-Authored-By: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

* fix d.ts

* Update src/@types/probe-image-size.d.ts

Co-Authored-By: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

* Update src/@types/probe-image-size.d.ts

Co-Authored-By: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

* fix

Co-authored-by: Acid Chicken (硫酸鶏) <root@acid-chicken.com>

src/misc/detect-url-mime.ts

@@ -0,0 +1,15 @@
+import { createTemp } from './create-temp';
+import { downloadUrl } from './donwload-url';
+import { detectType } from './get-file-info';
+
+export async function detectUrlMime(url: string) {
+	const [path, cleanup] = await createTemp();
+
+	try {
+		await downloadUrl(url, path);
+		const { mime } = await detectType(path);
+		return mime;
+	} finally {
+		cleanup();
+	}
+}