Major refactoring

src/types/index.ts

@@ -0,0 +1,21 @@
+export interface Group {
+  id: string;
+  day: string;
+  time: string;
+  lecturer: string;
+  room: string;
+}
+export interface Lecture {
+  id?: number;
+  name: string;
+  groups: Array<Group>;
+}
+export interface LectureInit {
+  name: string;
+  id: number;
+}
+export interface User {
+  name?: string;
+  surname?: string;
+  ticket: string | null;
+}