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)

4 files changed, 4 insertions, 4 deletions

diff --git a/client/src/app/+about/about-instance/about-instance.component.ts b/client/src/app/+about/about-instance/about-instance.component.ts
index fc5214215..85e973d7b 100644
--- a/client/src/app/+about/about-instance/about-instance.component.ts
+++ b/client/src/app/+about/about-instance/about-instance.component.ts
@@ -3,8 +3,8 @@ import { AfterViewChecked, Component, ElementRef, OnInit, ViewChild } from '@ang
 import { ActivatedRoute } from '@angular/router'
 import { Notifier, ServerService } from '@app/core'
 import { AboutHTML } from '@app/shared/shared-instance'
+import { HTMLServerConfig, ServerStats } from '@peertube/peertube-models'
 import { copyToClipboard } from '@root-helpers/utils'
-import { HTMLServerConfig, ServerStats } from '@shared/models/server'
 import { ResolverData } from './about-instance.resolver'
 import { ContactAdminModalComponent } from './contact-admin-modal.component'
 
diff --git a/client/src/app/+about/about-instance/about-instance.resolver.ts b/client/src/app/+about/about-instance/about-instance.resolver.ts
index f52a95b88..b5e8ccaa2 100644
--- a/client/src/app/+about/about-instance/about-instance.resolver.ts
+++ b/client/src/app/+about/about-instance/about-instance.resolver.ts
@@ -4,7 +4,7 @@ import { Injectable } from '@angular/core'
 import { ServerService } from '@app/core'
 import { CustomMarkupService } from '@app/shared/shared-custom-markup'
 import { AboutHTML, InstanceService } from '@app/shared/shared-instance'
-import { About, ServerStats } from '@shared/models/server'
+import { About, ServerStats } from '@peertube/peertube-models'
 
 export type ResolverData = {
   serverStats: ServerStats
diff --git a/client/src/app/+about/about-instance/contact-admin-modal.component.ts b/client/src/app/+about/about-instance/contact-admin-modal.component.ts
index 0e2bf51e8..38e577fcd 100644
--- a/client/src/app/+about/about-instance/contact-admin-modal.component.ts
+++ b/client/src/app/+about/about-instance/contact-admin-modal.component.ts
@@ -11,7 +11,7 @@ import { FormReactive, FormReactiveService } from '@app/shared/shared-forms'
 import { InstanceService } from '@app/shared/shared-instance'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { HTMLServerConfig, HttpStatusCode } from '@shared/models'
+import { HTMLServerConfig, HttpStatusCode } from '@peertube/peertube-models'
 
 type Prefill = {
   subject?: string
diff --git a/client/src/app/+about/about-instance/instance-statistics.component.ts b/client/src/app/+about/about-instance/instance-statistics.component.ts
index ac6984438..9eb56d0a4 100644
--- a/client/src/app/+about/about-instance/instance-statistics.component.ts
+++ b/client/src/app/+about/about-instance/instance-statistics.component.ts
@@ -1,5 +1,5 @@
 import { Component, Input } from '@angular/core'
-import { ServerStats } from '@shared/models/server'
+import { ServerStats } from '@peertube/peertube-models'
 
 @Component({
   selector: 'my-instance-statistics',