build: fix npm package for google-maps

Apparently the `google-maps` package has the same problem
as the `material-examples` package where the metadata for
the Bazel sub-packages is not incldued in the entry-point of
the `@angular/google-maps` entry-point. There are two solutions
to make it work with Angular package format:

* Making the packages generate flat module bundles and including them as secondary entry-points
* Only having one Bazel package so that metadata will be included in the flat module bundle.

I chose the latter as the `google-maps` package is still very small and doesn't have a lot
of dependencies, so in terms of speed it is even faster to have on package. Also it seems
like there were never plans to have secondary entry-points for that package.

Author: devversion

src/google-maps/BUILD.bazel

@@ -1,18 +1,16 @@
 package(default_visibility = ["//visibility:public"])
 
 load("//:packages.bzl", "ROLLUP_GLOBALS")
-load("//tools:defaults.bzl", "ng_module", "ng_package")
+load("//tools:defaults.bzl", "ng_module", "ng_package", "ng_test_library", "ng_web_test_suite")
 
 ng_module(
     name = "google-maps",
     srcs = glob(
-        ["*.ts"],
+        ["**/*.ts"],
         exclude = ["**/*.spec.ts"],
     ),
     module_name = "@angular/google-maps",
     deps = [
-        "//src/google-maps/google-map",
-        "//src/google-maps/map-marker",
         "@npm//@angular/core",
         "@npm//@types/googlemaps",
     ],
@@ -32,3 +30,21 @@ filegroup(
     name = "source-files",
     srcs = glob(["**/*.ts"]),
 )
+
+ng_test_library(
+    name = "unit_test_sources",
+    srcs = glob(
+        ["**/*.spec.ts"],
+        exclude = ["**/*.e2e.spec.ts"],
+    ),
+    deps = [
+        ":google-maps",
+        "//src/google-maps/testing",
+        "@npm//@angular/platform-browser",
+    ],
+)
+
+ng_web_test_suite(
+    name = "unit_tests",
+    deps = [":unit_test_sources"],
+)

src/google-maps/google-map/BUILD.bazel

@@ -7,7 +7,7 @@ ts_library(
     testonly = 1,
     srcs = glob(["**/*.ts"]),
     deps = [
-        "//src/google-maps/google-map",
+        "//src/google-maps",
         "@npm//@types/googlemaps",
         "@npm//@types/jasmine",
     ],