Add and configure ESLint and update configuration for Prettier (#341)

* Turn on ESLint and update Prettier

* Update eslint config

* Update eslint config

* Update dependencies

* Update ESLint and Prettier configurations

* update package.json

* Update prettier command

* Update prettier config file

* Change CRLF to LF

* Update docs

* Update docs

src/cache-utils.ts

@@ -35,7 +35,7 @@ export const getCacheDirectoryPath = async (
   packageManagerInfo: PackageManagerInfo
 ) => {
   const pathList = await Promise.all(
-    packageManagerInfo.cacheFolderCommandList.map(command =>
+    packageManagerInfo.cacheFolderCommandList.map(async command =>
       getCommandOutput(command)
     )
   );