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, 46 deletions

diff --git a/server/tests/shared/mock-servers/mock-instances-index.ts b/server/tests/shared/mock-servers/mock-instances-index.ts
deleted file mode 100644
index 598b007f1..000000000
--- a/server/tests/shared/mock-servers/mock-instances-index.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-import express from 'express'
-import { Server } from 'http'
-import { getPort, randomListen, terminateServer } from './shared'
-
-export class MockInstancesIndex {
-  private server: Server
-
-  private readonly indexInstances: { host: string, createdAt: string }[] = []
-
-  async initialize () {
-    const app = express()
-
-    app.use('/', (req: express.Request, res: express.Response, next: express.NextFunction) => {
-      if (process.env.DEBUG) console.log('Receiving request on mocked server %s.', req.url)
-
-      return next()
-    })
-
-    app.get('/api/v1/instances/hosts', (req: express.Request, res: express.Response) => {
-      const since = req.query.since
-
-      const filtered = this.indexInstances.filter(i => {
-        if (!since) return true
-
-        return i.createdAt > since
-      })
-
-      return res.json({
-        total: filtered.length,
-        data: filtered
-      })
-    })
-
-    this.server = await randomListen(app)
-
-    return getPort(this.server)
-  }
-
-  addInstance (host: string) {
-    this.indexInstances.push({ host, createdAt: new Date().toISOString() })
-  }
-
-  terminate () {
-    return terminateServer(this.server)
-  }
-}