feat: support for multiple encodings in CSV files (#5756)

frontend/src/types/file.d.ts

@@ -21,6 +21,7 @@ interface Resource extends ResourceBase {
   index: number;
   subtitles?: string[];
   content?: string;
+  rawContent?: ArrayBuffer;
 }
 
 interface ResourceItem extends ResourceBase {
@@ -57,3 +58,8 @@ interface BreadCrumb {
   name: string;
   url: string;
 }
+
+interface CsvData {
+  headers: string[];
+  rows: string[][];
+}