feat(tabs): Add support for custom tabs

cli/__tests__/convertToMDX.test.ts

@@ -1,11 +1,10 @@
-import { readFile, writeFile, unlink } from 'fs/promises'
+import { readFile, writeFile } from 'fs/promises'
 import { glob } from 'glob'
 import { convertToMDX } from '../convertToMDX.ts'
 
 jest.mock('fs/promises', () => ({
   readFile: jest.fn(),
   writeFile: jest.fn(),
-  unlink: jest.fn(),
   access: jest.fn().mockResolvedValue(undefined), // Mock access to always resolve (file exists)
 }))
 
@@ -132,17 +131,6 @@ import Example1 from './Example1.html?raw'
   expect(writeFile).toHaveBeenCalledWith('test.mdx', expectedContent)
 })
 
-it('should delete the original file after conversion', async () => {
-  const mockContent = '# Test Content\nSome text here'
-  ;(glob as unknown as jest.Mock).mockResolvedValue(['test.md'])
-  ;(readFile as jest.Mock).mockResolvedValue(mockContent)
-
-  await convertToMDX('test.md')
-
-  expect(writeFile).toHaveBeenCalledWith('test.mdx', mockContent)
-  expect(unlink).toHaveBeenCalledWith('test.md')
-})
-
 it('should convert HTML comments in MD content to MDX format', async () => {
   const mockContent = '# Test Content\n<!-- This is a comment in the MD content -->\nSome text here\n<!-- Another comment\nspanning multiple lines -->'
   const expectedContent = '# Test Content\n{/* This is a comment in the MD content */}\nSome text here\n{/* Another comment\nspanning multiple lines */}'

cli/convertToMDX.ts

@@ -1,4 +1,4 @@
-import { readFile, writeFile, unlink, access } from 'fs/promises'
+import { readFile, writeFile, access } from 'fs/promises'
 import { glob } from 'glob'
 import path from 'path'
 
@@ -89,7 +89,6 @@ async function processFile(file: string): Promise<void> {
   )
 
   await writeFile(file + 'x', processedContent)
-  await unlink(file)
 }
 
 export async function convertToMDX(globPath: string): Promise<void> {