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)

1 files changed, 0 insertions, 61 deletions

diff --git a/server/tests/shared/mock-servers/mock-email.ts b/server/tests/shared/mock-servers/mock-email.ts
deleted file mode 100644
index 6eda2dfda..000000000
--- a/server/tests/shared/mock-servers/mock-email.ts
+++ /dev/null
@@ -1,61 +0,0 @@
-import MailDev from '@peertube/maildev'
-import { parallelTests, randomInt } from '@shared/core-utils'
-
-class MockSmtpServer {
-
-  private static instance: MockSmtpServer
-  private started = false
-  private maildev: any
-  private emails: object[]
-
-  private constructor () { }
-
-  collectEmails (emailsCollection: object[]) {
-    return new Promise<number>((res, rej) => {
-      const port = parallelTests() ? randomInt(1025, 2000) : 1025
-      this.emails = emailsCollection
-
-      if (this.started) {
-        return res(undefined)
-      }
-
-      this.maildev = new MailDev({
-        ip: '127.0.0.1',
-        smtp: port,
-        disableWeb: true,
-        silent: true
-      })
-
-      this.maildev.on('new', email => {
-        this.emails.push(email)
-      })
-
-      this.maildev.listen(err => {
-        if (err) return rej(err)
-
-        this.started = true
-
-        return res(port)
-      })
-    })
-  }
-
-  kill () {
-    if (!this.maildev) return
-
-    this.maildev.close()
-
-    this.maildev = null
-    MockSmtpServer.instance = null
-  }
-
-  static get Instance () {
-    return this.instance || (this.instance = new this())
-  }
-}
-
-// ---------------------------------------------------------------------------
-
-export {
-  MockSmtpServer
-}