refactor: change object name from Activity to ActivityPub

  getAuthenticatedDocumentLoader,

  type Link,

  lookupObject,

  Object as ActivityObject,

  Object as APObject,

  type ResourceDescriptor,

  respondWithObject,

  traverseCollection,

import { dirname, isAbsolute, resolve } from "@std/path";

import ora from "ora";

import { getContextLoader, getDocumentLoader } from "./docloader.ts";

import { renderImage } from "./renderimage.ts";

import { renderImage } from "./imagerenderer.ts";

import { spawnTemporaryServer, type TemporaryServer } from "./tempserver.ts";

import { colorEnabled, formatCliObjectOutputWithColor } from "./utils.ts";

  }

}

async function findAllImages(obj: ActivityObject): Promise<URL[]> {

async function findAllImages(obj: APObject): Promise<URL[]> {

  const result: URL[] = [];

  const icon = await obj.getIcon();

  const image = await obj.getImage();

}

export async function writeObjectToStream(

  object: ActivityObject | Link,

  object: APObject | Link,

  options: CommandOptions,

  contextLoader: DocumentLoader,

): Promise<void> {

    await writer.write(bytes);

    if (object instanceof ActivityObject) {

    if (object instanceof APObject) {

      imageUrls = await findAllImages(object);

    }

    if (!options.output && imageUrls.length > 0) {

      Deno.exit(0);

    }

    const promises: Promise<ActivityObject | null>[] = [];

    const promises: Promise<APObject | null>[] = [];

    for (const url of urls) {

      promises.push(

        lookupObject(