feat: Implemented import/export page

frontend/react/src/constants/constants.ts

@@ -289,6 +289,7 @@ export enum OlympusState {
   AUDIO = "Audio",
   AIRBASE = "Airbase",
   GAME_MASTER = "Game master",
+  IMPORT_EXPORT = "Import/export"
 }
 
 export const NO_SUBSTATE = "No substate";
@@ -334,6 +335,13 @@ export enum OptionsSubstate {
   KEYBIND = "Keybind",
 }
 
+export enum ImportExportSubstate {
+  NO_SUBSTATE = "No substate",
+  IMPORT = "IMPORT",
+  EXPORT = "EXPORT"
+}
+
+
 export type OlympusSubState = DrawSubState | JTACSubState | SpawnSubState | OptionsSubstate | string;
 
 export const IADSTypes = ["AAA", "SAM Site", "Radar (EWR)"];