feat: class validator middleware for Hono

[pr0m3th3usEx]

This middleware enables validation using class-validator & class-transformer packages.

Example

import { classValidator } from '@hono/class-validator'
import { IsInt, IsString } from 'class-validator'
 
class CreateUserDto {
  @IsString()
  name!: string;
 
  @IsInt()
  age!: number;
}
 
 
const route = app.post('/user', classValidator('json', CreateUserDto), (c) => {
  const user = c.req.valid('json')
  return c.json({ success: true, message: `${user.name} is ${user.age}` })
})

[changeset-bot]

🦋 Changeset detected

Latest commit: da23e9c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hono/class-validator	Major

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[yusukebe]

Hi @pr0m3th3usEx

I've left the comments. Please check them!

[pr0m3th3usEx]

@yusukebe I made the changes