feat: add first-class support for change handlers

[LuLaValva]

Description

Adds first-class support for change handlers and Marko's controllable pattern.

Controllable args in argTypes can now include changeHandler. This does two things:

1. Automatically add a _Change entry in the table with a default description and type that references docs, or a custom one determined by the user
2. Wires up the arguments in storybook so they automatically sync with the preview, demonstrating how the pattern might be used.

controllable.mov

{
  argTypes: {
    value: {
      changeHandler: true,
      control: { type: "text" },
      description: "Controllable text value",
      table: {
        type: { summary: "string" },
      },
    },
    pressed: {
      changeHandler: "Control the `pressed` attribute with a hoist",
      control: { type: "boolean" },
      description: "Controllable boolean value",
      table: {
        type: { summary: "boolean" },
        defaultValue: {
          summary: "false",
        },
      },
    },
    color: {
      options: ["red", "orange", "yellow"],
      changeHandler: spanishChangeHandlerMessage,
      control: { type: "inline-radio" },
      description: "Controllable boolean value",
      table: {
        type: { summary: "boolean" },
      },
    },
  },
}

Checklist:

• I have updated/added documentation affected by my changes.
• I have added tests to cover my changes.

[changeset-bot]

🦋 Changeset detected

Latest commit: 9770e12

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

This PR includes changesets to release 1 package

Name	Type
@storybook/marko	Minor

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