feat: Import improvements (#3064)

* feat: Split and simplify import/export pages in prep for more options

* minor fixes

* File operations for imports

* test

* icons

app/models/FileOperation.ts

@@ -1,6 +1,5 @@
 import { computed } from "mobx";
 import BaseModal from "./BaseModel";
-import Collection from "./Collection";
 import User from "./User";
 
 class FileOperation extends BaseModal {
@@ -8,11 +7,15 @@ class FileOperation extends BaseModal {
 
   state: string;
 
-  collection: Collection | null | undefined;
+  name: string;
+
+  error: string | null;
+
+  collectionId: string | null;
 
   size: number;
 
-  type: string;
+  type: "import" | "export";
 
   user: User;