Migrate server to ESM

Sorry for the very big commit that may lead to git log issues and merge
conflicts, but it's a major step forward:

 * Server can be faster at startup because imports() are async and we can
   easily lazy import big modules
 * Angular doesn't seem to support ES import (with .js extension), so we
   had to correctly organize peertube into a monorepo:
    * Use yarn workspace feature
    * Use typescript reference projects for dependencies
    * Shared projects have been moved into "packages", each one is now a
      node module (with a dedicated package.json/tsconfig.json)
    * server/tools have been moved into apps/ and is now a dedicated app
      bundled and published on NPM so users don't have to build peertube
      cli tools manually
    * server/tests have been moved into packages/ so we don't compile
      them every time we want to run the server
 * Use isolatedModule option:
   * Had to move from const enum to const
     (https://www.typescriptlang.org/docs/handbook/enums.html#objects-vs-enums)
   * Had to explictely specify "type" imports when used in decorators
 * Prefer tsx (that uses esbuild under the hood) instead of ts-node to
   load typescript files (tests with mocha or scripts):
     * To reduce test complexity as esbuild doesn't support decorator
       metadata, we only test server files that do not import server
       models
     * We still build tests files into js files for a faster CI
 * Remove unmaintained peertube CLI import script
 * Removed some barrels to speed up execution (less imports)

server/scripts/update-host.ts

@@ -0,0 +1,140 @@
+import { updateTorrentMetadata } from '@server/helpers/webtorrent.js'
+import { getServerActor } from '@server/models/application/application.js'
+import { WEBSERVER } from '@server/initializers/constants.js'
+import { initDatabaseModels } from '@server/initializers/database.js'
+import {
+  getLocalAccountActivityPubUrl,
+  getLocalVideoActivityPubUrl,
+  getLocalVideoAnnounceActivityPubUrl,
+  getLocalVideoChannelActivityPubUrl,
+  getLocalVideoCommentActivityPubUrl
+} from '@server/lib/activitypub/url.js'
+import { AccountModel } from '@server/models/account/account.js'
+import { ActorFollowModel } from '@server/models/actor/actor-follow.js'
+import { ActorModel } from '@server/models/actor/actor.js'
+import { VideoChannelModel } from '@server/models/video/video-channel.js'
+import { VideoCommentModel } from '@server/models/video/video-comment.js'
+import { VideoShareModel } from '@server/models/video/video-share.js'
+import { VideoModel } from '@server/models/video/video.js'
+
+run()
+  .then(() => process.exit(0))
+  .catch(err => {
+    console.error(err)
+    process.exit(-1)
+  })
+
+async function run () {
+  await initDatabaseModels(true)
+
+  const serverAccount = await getServerActor()
+
+  {
+    const res = await ActorFollowModel.listAcceptedFollowingUrlsForApi([ serverAccount.id ], undefined)
+    const hasFollowing = res.total > 0
+
+    if (hasFollowing === true) {
+      throw new Error('Cannot update host because you follow other servers!')
+    }
+  }
+
+  console.log('Updating actors.')
+
+  const actors: ActorModel[] = await ActorModel.unscoped().findAll({
+    include: [
+      {
+        model: VideoChannelModel.unscoped(),
+        required: false
+      },
+      {
+        model: AccountModel.unscoped(),
+        required: false
+      }
+    ]
+  })
+  for (const actor of actors) {
+    if (actor.isOwned() === false) continue
+
+    console.log('Updating actor ' + actor.url)
+
+    const newUrl = actor.Account
+      ? getLocalAccountActivityPubUrl(actor.preferredUsername)
+      : getLocalVideoChannelActivityPubUrl(actor.preferredUsername)
+
+    actor.url = newUrl
+    actor.inboxUrl = newUrl + '/inbox'
+    actor.outboxUrl = newUrl + '/outbox'
+    actor.sharedInboxUrl = WEBSERVER.URL + '/inbox'
+    actor.followersUrl = newUrl + '/followers'
+    actor.followingUrl = newUrl + '/following'
+
+    await actor.save()
+  }
+
+  console.log('Updating video shares.')
+
+  const videoShares: VideoShareModel[] = await VideoShareModel.findAll({
+    include: [ VideoModel.unscoped(), ActorModel.unscoped() ]
+  })
+  for (const videoShare of videoShares) {
+    if (videoShare.Video.isOwned() === false) continue
+
+    console.log('Updating video share ' + videoShare.url)
+
+    videoShare.url = getLocalVideoAnnounceActivityPubUrl(videoShare.Actor, videoShare.Video)
+    await videoShare.save()
+  }
+
+  console.log('Updating video comments.')
+  const videoComments: VideoCommentModel[] = await VideoCommentModel.findAll({
+    include: [
+      {
+        model: VideoModel.unscoped()
+      },
+      {
+        model: AccountModel.unscoped(),
+        include: [
+          {
+            model: ActorModel.unscoped()
+          }
+        ]
+      }
+    ]
+  })
+  for (const comment of videoComments) {
+    if (comment.isOwned() === false) continue
+
+    console.log('Updating comment ' + comment.url)
+
+    comment.url = getLocalVideoCommentActivityPubUrl(comment.Video, comment)
+    await comment.save()
+  }
+
+  console.log('Updating video and torrent files.')
+
+  const ids = await VideoModel.listLocalIds()
+  for (const id of ids) {
+    const video = await VideoModel.loadFull(id)
+
+    console.log('Updating video ' + video.uuid)
+
+    video.url = getLocalVideoActivityPubUrl(video)
+    await video.save()
+
+    for (const file of video.VideoFiles) {
+      console.log('Updating torrent file %s of video %s.', file.resolution, video.uuid)
+      await updateTorrentMetadata(video, file)
+
+      await file.save()
+    }
+
+    const playlist = video.getHLSPlaylist()
+    for (const file of (playlist?.VideoFiles || [])) {
+      console.log('Updating fragmented torrent file %s of video %s.', file.resolution, video.uuid)
+
+      await updateTorrentMetadata(playlist, file)
+
+      await file.save()
+    }
+  }
+}