feat: add some formkit custom input for the system core extensions

[ruibaby]

What type of PR is this?

/kind feature /milestone 2.0

What this PR does / why we need it:

Ref https://github.com/halo-dev/halo/issues/2526#issuecomment-1273094868

FormKit 文档：https://formkit.com/advanced/custom-inputs

通过扩展 FormKit 的自定义 Input，提供系统常用资源的选择组件。

目前提供如下类型：

• menuCheckbox
• menuRadio
• menuItemSelect
• postSelect
• categorySelect
• tagSelect
• singlePageSelect
• categoryCheckbox
• tagCheckbox

FormKit 组件的使用方式：

<FormKit
        placeholder="请选择文章"
        label="文章"
        type="postSelect"
        validation="required"
/>

FormKit Schema 的使用方式：

- $formkit: menuRadio
    name: menus
    label: 底部菜单组

Which issue(s) this PR fixes:

Fixes https://github.com/halo-dev/halo/issues/2526

Screenshots:

Special notes for your reviewer:

/cc @halo-dev/sig-halo-console

测试方式：

1. 检查后台文章设置弹框的选择分类和标签功能是否正常。
2. 检查后台添加菜单项的功能是否正常。
3. 使用主题或者插件定义 settings.yaml，使用上述任意 input 类型，检查得到的效果和值是否正常。

Does this PR introduce a user-facing change?

通过扩展 FormKit 的自定义 Input，提供系统常用资源的选择组件。

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