Add support to upload custom file

islands/Upload.tsx

@@ -0,0 +1,44 @@
+import t, { i18n_map, I18NMap } from "../server/i18n.ts";
+
+export type UploaderProps = {
+    i18n?: I18NMap;
+    lang?: string;
+};
+
+export default function Uploader(props: UploaderProps) {
+    if (props.i18n) i18n_map.value = props.i18n;
+    return (
+        <form
+            action="/api/file/upload"
+            method="post"
+            encType="multipart/form-data"
+        >
+            <input
+                type="file"
+                name="file"
+                required={true}
+                accept=".jpg,.jpeg,.png"
+            />
+            <br />
+            {t("upload.filename")}{" "}
+            <input
+                type="text"
+                name="filename"
+                placeholder={t("upload.filename")}
+            />
+            <br />
+            <input id="is_original" type="checkbox" name="is_original" />{" "}
+            <label for="is_original">{t("upload.is_original")}</label>
+            <br />
+            <input
+                id="token"
+                type="text"
+                name="token"
+                placeholder={t("upload.token")}
+                required={true}
+            />
+            <br />
+            <input type="submit" value={t("upload.upload")} />
+        </form>
+    );
+}