build: create dev-infra-private npm package (#35862)

Creates the scaffolding for an @angular/dev-infra-private package
which will not be published to npm but will be pushed to
https://github.com/angular/dev-infra-private-builds repo for each
commit to master.

The contents of this npm package will then be depended on via
package.json dependency for angular/angular angular/angular-cli and
angular/components.

PR Close #35862

dev-infra/BUILD.bazel

@@ -0,0 +1,23 @@
+load("@build_bazel_rules_nodejs//:index.bzl", "pkg_npm")
+load("@npm_bazel_typescript//:index.bzl", "ts_library")
+
+ts_library(
+    name = "cli",
+    srcs = [
+        "cli.ts",
+    ],
+    deps = [
+        "@npm//@types/node",
+    ],
+)
+
+pkg_npm(
+    name = "npm_package",
+    srcs = [
+        "package.json",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        ":cli",
+    ],
+)