ci: new true builder as a private package (angular#12390)

This is useful for testing things with a builder that always succeeds. In
a project, use "devkit-admin build && npm install $DEVKIT_PATH/dist/___builder.tgz"
and you have a "@_/builders" package that contains a true builder.

This is not published on NPM so I scope this as ci.

Author: hansl

.monorepo.json

@@ -45,6 +45,10 @@
       "version": "0.9.0-beta.4",
       "hash": "a9b1f213a4069f789d20021bda616775"
     },
+    "@_/builders": {
+      "version": "0.9.0-beta.4",
+      "hash": ""
+    },
     "devkit": {
       "version": "0.9.0-beta.4",
       "hash": "30ac66398ef7b4f7a5dbd3192d24c665"

packages/_/builders/builders.json

@@ -0,0 +1,10 @@
+{
+  "$schema": "../architect/src/builders-schema.json",
+  "builders": {
+    "true": {
+      "class": "./src/true",
+      "schema": "./src/noop-schema.json",
+      "description": "Always succeed."
+    }
+  }
+}

packages/_/builders/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "@_/builders",
+  "version": "0.0.0",
+  "description": "CLI tool for Angular",
+  "main": "src/index.js",
+  "typings": "src/index.d.ts",
+  "builders": "builders.json",
+  "private": true,
+  "dependencies": {
+    "rxjs": "6.3.3"
+  }
+}

packages/_/builders/src/noop-schema.json

@@ -0,0 +1,4 @@
+{
+  "$schema": "http://json-schema.org/schema",
+  "type": "object"
+}

packages/_/builders/src/true.ts

@@ -0,0 +1,20 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+import { Observable, of } from 'rxjs';
+
+export class TrueBuilder {
+  constructor() {}
+
+  run(): Observable<{ success: boolean }> {
+    return of({
+      success: true,
+    });
+  }
+}
+
+export default TrueBuilder;