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/migrations/peertube-4.2.ts

@@ -0,0 +1,123 @@
+import { ActorImageType } from '@peertube/peertube-models'
+import { buildUUID, getLowercaseExtension } from '@peertube/peertube-node-utils'
+import { getImageSize, processImage } from '@server/helpers/image-utils.js'
+import { CONFIG } from '@server/initializers/config.js'
+import { ACTOR_IMAGES_SIZE } from '@server/initializers/constants.js'
+import { initDatabaseModels } from '@server/initializers/database.js'
+import { updateActorImages } from '@server/lib/activitypub/actors/index.js'
+import { sendUpdateActor } from '@server/lib/activitypub/send/index.js'
+import { getBiggestActorImage } from '@server/lib/actor-image.js'
+import { JobQueue } from '@server/lib/job-queue/index.js'
+import { AccountModel } from '@server/models/account/account.js'
+import { ActorModel } from '@server/models/actor/actor.js'
+import { VideoChannelModel } from '@server/models/video/video-channel.js'
+import { MAccountDefault, MActorDefault, MChannelDefault } from '@server/types/models/index.js'
+import minBy from 'lodash-es/minBy.js'
+import { join } from 'path'
+
+run()
+  .then(() => process.exit(0))
+  .catch(err => {
+    console.error(err)
+    process.exit(-1)
+  })
+
+async function run () {
+  console.log('Generate avatar miniatures from existing avatars.')
+
+  await initDatabaseModels(true)
+  JobQueue.Instance.init()
+
+  const accounts: AccountModel[] = await AccountModel.findAll({
+    include: [
+      {
+        model: ActorModel,
+        required: true,
+        where: {
+          serverId: null
+        }
+      },
+      {
+        model: VideoChannelModel,
+        include: [
+          {
+            model: AccountModel
+          }
+        ]
+      }
+    ]
+  })
+
+  for (const account of accounts) {
+    try {
+      await fillAvatarSizeIfNeeded(account)
+      await generateSmallerAvatarIfNeeded(account)
+    } catch (err) {
+      console.error(`Cannot process account avatar ${account.name}`, err)
+    }
+
+    for (const videoChannel of account.VideoChannels) {
+      try {
+        await fillAvatarSizeIfNeeded(videoChannel)
+        await generateSmallerAvatarIfNeeded(videoChannel)
+      } catch (err) {
+        console.error(`Cannot process channel avatar ${videoChannel.name}`, err)
+      }
+    }
+  }
+
+  console.log('Generation finished!')
+}
+
+async function fillAvatarSizeIfNeeded (accountOrChannel: MAccountDefault | MChannelDefault) {
+  const avatars = accountOrChannel.Actor.Avatars
+
+  for (const avatar of avatars) {
+    if (avatar.width && avatar.height) continue
+
+    console.log('Filling size of avatars of %s.', accountOrChannel.name)
+
+    const { width, height } = await getImageSize(join(CONFIG.STORAGE.ACTOR_IMAGES_DIR, avatar.filename))
+    avatar.width = width
+    avatar.height = height
+
+    await avatar.save()
+  }
+}
+
+async function generateSmallerAvatarIfNeeded (accountOrChannel: MAccountDefault | MChannelDefault) {
+  const avatars = accountOrChannel.Actor.Avatars
+  if (avatars.length !== 1) {
+    return
+  }
+
+  console.log(`Processing ${accountOrChannel.name}.`)
+
+  await generateSmallerAvatar(accountOrChannel.Actor)
+  accountOrChannel.Actor = Object.assign(accountOrChannel.Actor, { Server: null })
+
+  return sendUpdateActor(accountOrChannel, undefined)
+}
+
+async function generateSmallerAvatar (actor: MActorDefault) {
+  const bigAvatar = getBiggestActorImage(actor.Avatars)
+
+  const imageSize = minBy(ACTOR_IMAGES_SIZE[ActorImageType.AVATAR], 'width')
+  const sourceFilename = bigAvatar.filename
+
+  const newImageName = buildUUID() + getLowercaseExtension(sourceFilename)
+  const source = join(CONFIG.STORAGE.ACTOR_IMAGES_DIR, sourceFilename)
+  const destination = join(CONFIG.STORAGE.ACTOR_IMAGES_DIR, newImageName)
+
+  await processImage({ path: source, destination, newSize: imageSize, keepOriginal: true })
+
+  const actorImageInfo = {
+    name: newImageName,
+    fileUrl: null,
+    height: imageSize.height,
+    width: imageSize.width,
+    onDisk: true
+  }
+
+  await updateActorImages(actor, ActorImageType.AVATAR, [ actorImageInfo ], undefined)
+}