Add auto import plugin

[mantou132]

• auto import all '@mantou/gem'
• auto import element

support bundler(use unplugin):

• vite
• webpack

config:

• type: 'lit' | 'svelte'
• rules: [(tag: string) => string ]

types support ?

[mantou132]

eslint/prettier plugin? support bundless:

• Type Annotations
• JSDoc

[mantou132]

static assets preload:

import src from 'xxxx?preload'

=>

import src from 'xxxx?url'
document.head.append(<link rel=preload href=src>)