chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

app/models/FileOperation.ts

@@ -0,0 +1,33 @@
+import { computed } from "mobx";
+import BaseModal from "./BaseModel";
+import Collection from "./Collection";
+import User from "./User";
+
+class FileOperation extends BaseModal {
+  id: string;
+
+  state: string;
+
+  collection: Collection | null | undefined;
+
+  size: number;
+
+  type: string;
+
+  user: User;
+
+  createdAt: string;
+
+  @computed
+  get sizeInMB(): string {
+    const inKB = this.size / 1024;
+
+    if (inKB < 1024) {
+      return inKB.toFixed(2) + "KB";
+    }
+
+    return (inKB / 1024).toFixed(2) + "MB";
+  }
+}
+
+export default FileOperation;