refactor: apply deno lint --fix

cli/send.ts

@@ -1,7 +1,7 @@
 import { Command } from '@cliffy/command/mod.ts'
 import { Contact } from '../src/contact.ts'
 import { send } from '../src/send.ts'
-import { Mail } from '../types.ts'
+import type { Mail } from '../types.ts'
 
 export const cmd = new Command()
 	.name('send')

src/send.ts

@@ -1,4 +1,4 @@
-import { Mail } from '../types.ts'
+import type { Mail } from '../types.ts'
 import { transporter } from './transporter.ts'
 
 export function send(mail: Mail) {

src/template.tsx

@@ -1,8 +1,8 @@
-import React from 'preact/compat' //for jsx-email
+import type React from 'preact/compat' //for jsx-email
 import { render } from 'jsx-email'
 // @deno-types="npm:turndown"
 import Turndown from 'turndown'
-import { JSX } from 'preact'
+import type { JSX } from 'preact'
 
 const htmlToMd = new Turndown({
 	headingStyle: 'atx',

types.ts

@@ -1,5 +1,5 @@
 import type { JSX } from 'preact'
-import { Contact } from './src/contact.ts'
+import type { Contact } from './src/contact.ts'
 
 export type Mail = {
 	from: Contact