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, 76 insertions, 0 deletions

diff --git a/packages/tests/src/cli/plugins.ts b/packages/tests/src/cli/plugins.ts
new file mode 100644
index 000000000..ab7f7dd85
--- /dev/null
+++ b/packages/tests/src/cli/plugins.ts
@@ -0,0 +1,76 @@
+/* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */
+
+import { expect } from 'chai'
+import {
+  cleanupTests,
+  createSingleServer,
+  killallServers,
+  PeerTubeServer,
+  PluginsCommand,
+  setAccessTokensToServers
+} from '@peertube/peertube-server-commands'
+
+describe('Test plugin scripts', function () {
+  let server: PeerTubeServer
+
+  before(async function () {
+    this.timeout(30000)
+
+    server = await createSingleServer(1)
+    await setAccessTokensToServers([ server ])
+  })
+
+  it('Should install a plugin from stateless CLI', async function () {
+    this.timeout(60000)
+
+    const packagePath = PluginsCommand.getPluginTestPath()
+
+    await server.cli.execWithEnv(`npm run plugin:install -- --plugin-path ${packagePath}`)
+  })
+
+  it('Should install a theme from stateless CLI', async function () {
+    this.timeout(60000)
+
+    await server.cli.execWithEnv(`npm run plugin:install -- --npm-name peertube-theme-background-red`)
+  })
+
+  it('Should have the theme and the plugin registered when we restart peertube', async function () {
+    this.timeout(30000)
+
+    await killallServers([ server ])
+    await server.run()
+
+    const config = await server.config.getConfig()
+
+    const plugin = config.plugin.registered
+                         .find(p => p.name === 'test')
+    expect(plugin).to.not.be.undefined
+
+    const theme = config.theme.registered
+                        .find(t => t.name === 'background-red')
+    expect(theme).to.not.be.undefined
+  })
+
+  it('Should uninstall a plugin from stateless CLI', async function () {
+    this.timeout(60000)
+
+    await server.cli.execWithEnv(`npm run plugin:uninstall -- --npm-name peertube-plugin-test`)
+  })
+
+  it('Should have removed the plugin on another peertube restart', async function () {
+    this.timeout(30000)
+
+    await killallServers([ server ])
+    await server.run()
+
+    const config = await server.config.getConfig()
+
+    const plugin = config.plugin.registered
+                         .find(p => p.name === 'test')
+    expect(plugin).to.be.undefined
+  })
+
+  after(async function () {
+    await cleanupTests([ server ])
+  })
+})