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/server/models/runner/runner.ts

@@ -0,0 +1,124 @@
+import { FindOptions } from 'sequelize'
+import { AllowNull, BelongsTo, Column, CreatedAt, DataType, ForeignKey, Model, Table, UpdatedAt } from 'sequelize-typescript'
+import { MRunner } from '@server/types/models/runners/index.js'
+import { Runner } from '@peertube/peertube-models'
+import { AttributesOnly } from '@peertube/peertube-typescript-utils'
+import { getSort } from '../shared/index.js'
+import { RunnerRegistrationTokenModel } from './runner-registration-token.js'
+import { CONSTRAINTS_FIELDS } from '@server/initializers/constants.js'
+
+@Table({
+  tableName: 'runner',
+  indexes: [
+    {
+      fields: [ 'runnerToken' ],
+      unique: true
+    },
+    {
+      fields: [ 'runnerRegistrationTokenId' ]
+    },
+    {
+      fields: [ 'name' ],
+      unique: true
+    }
+  ]
+})
+export class RunnerModel extends Model<Partial<AttributesOnly<RunnerModel>>> {
+
+  // Used to identify the appropriate runner when it uses the runner REST API
+  @AllowNull(false)
+  @Column
+  runnerToken: string
+
+  @AllowNull(false)
+  @Column
+  name: string
+
+  @AllowNull(true)
+  @Column(DataType.STRING(CONSTRAINTS_FIELDS.RUNNERS.DESCRIPTION.max))
+  description: string
+
+  @AllowNull(false)
+  @Column
+  lastContact: Date
+
+  @AllowNull(false)
+  @Column
+  ip: string
+
+  @CreatedAt
+  createdAt: Date
+
+  @UpdatedAt
+  updatedAt: Date
+
+  @ForeignKey(() => RunnerRegistrationTokenModel)
+  @Column
+  runnerRegistrationTokenId: number
+
+  @BelongsTo(() => RunnerRegistrationTokenModel, {
+    foreignKey: {
+      allowNull: false
+    },
+    onDelete: 'cascade'
+  })
+  RunnerRegistrationToken: Awaited<RunnerRegistrationTokenModel>
+
+  // ---------------------------------------------------------------------------
+
+  static load (id: number) {
+    return RunnerModel.findByPk(id)
+  }
+
+  static loadByToken (runnerToken: string) {
+    const query = {
+      where: { runnerToken }
+    }
+
+    return RunnerModel.findOne(query)
+  }
+
+  static loadByName (name: string) {
+    const query = {
+      where: { name }
+    }
+
+    return RunnerModel.findOne(query)
+  }
+
+  static listForApi (options: {
+    start: number
+    count: number
+    sort: string
+  }) {
+    const { start, count, sort } = options
+
+    const query: FindOptions = {
+      offset: start,
+      limit: count,
+      order: getSort(sort)
+    }
+
+    return Promise.all([
+      RunnerModel.count(query),
+      RunnerModel.findAll<MRunner>(query)
+    ]).then(([ total, data ]) => ({ total, data }))
+  }
+
+  // ---------------------------------------------------------------------------
+
+  toFormattedJSON (this: MRunner): Runner {
+    return {
+      id: this.id,
+
+      name: this.name,
+      description: this.description,
+
+      ip: this.ip,
+      lastContact: this.lastContact,
+
+      createdAt: this.createdAt,
+      updatedAt: this.updatedAt
+    }
+  }
+}