refactor: moved all "utils" to one folder

src/axios/cache.ts

@@ -2,7 +2,7 @@ import { AxiosInstance } from 'axios';
 import { applyRequestInterceptor } from '../interceptors/request';
 import { applyResponseInterceptor } from '../interceptors/response';
 import { MemoryStorage } from '../storage/memory';
-import { defaultKeyGenerator } from '../utils/key-generator';
+import { defaultKeyGenerator } from '../util/key-generator';
 import { AxiosCacheInstance, CacheInstance, CacheProperties } from './types';
 
 export function createCache(

src/axios/types.ts

@@ -6,7 +6,7 @@ import type {
   AxiosResponse,
   Method
 } from 'axios';
-import { Deferred } from 'src/utils/deferred';
+import { Deferred } from 'src/util/deferred';
 import { CachedResponse, CacheStorage } from '../storage/types';
 
 export type DefaultCacheRequestConfig = AxiosRequestConfig & {

src/interceptors/request.ts

@@ -1,7 +1,7 @@
 import { CachedResponse } from 'src/storage/types';
 import { AxiosCacheInstance } from '../axios/types';
 import { CACHED_RESPONSE_STATUS, CACHED_RESPONSE_STATUS_TEXT } from '../constants';
-import { Deferred } from '../utils/deferred';
+import { Deferred } from '../util/deferred';
 
 export function applyRequestInterceptor(axios: AxiosCacheInstance) {
   axios.interceptors.request.use(async (config) => {

src/interceptors/response.ts

@@ -1,6 +1,6 @@
 import { AxiosCacheInstance } from '../axios/types';
 import { interpretCacheHeader } from './util/interpret-header';
-import { updateCache } from './util/update-cache';
+import { updateCache } from '../util/update-cache';
 
 export function applyResponseInterceptor(axios: AxiosCacheInstance) {
   axios.interceptors.response.use(async (response) => {

src/util/update-cache.ts

@@ -1,4 +1,4 @@
-import { AxiosCacheInstance, CacheProperties } from '../../axios';
+import { AxiosCacheInstance, CacheProperties } from '../axios';
 
 export async function updateCache(
   axios: AxiosCacheInstance,