add file chuck upload, file validation, redirect to home page incase route doesnt exist and refresh token interceptor

src/app/services/Either/index.ts

@@ -0,0 +1,10 @@
+
+export type Either<T, E> = { isOk: true; isError: false, value: T } | { isOk: false; isError: true, error: E };
+
+export function ok<T, E>(value: T): Either<T, E> {
+  return { isOk: true, isError: false, value };
+}
+
+export  function error<T, E>(error: E): Either<T, E> {
+  return { isOk: false, isError: true, error};
+}