refactor: fix types path

Author: sxzz

src/core/default-locale.ts

@@ -1,5 +1,5 @@
 import escapeStringRegexp from 'escape-string-regexp'
-import type { Options } from '../index'
+import type { Options } from './types'
 import type { Plugin } from 'esbuild'
 
 export function getLocaleRE(options: Options): RegExp {

src/core/style.ts

@@ -1,6 +1,6 @@
 import { init, parse, type ImportSpecifier } from 'es-module-lexer'
 import MagicString from 'magic-string'
-import type { Options } from '../index'
+import type { Options } from './types'
 
 type FormatType = 'cjs' | 'esm'