Add testonly parameter to ng_project_config function

Author: sbarfurth

src/ng_project/config/index.bzl

@@ -1,12 +1,13 @@
 load("@aspect_rules_ts//ts:defs.bzl", "ts_config")
 load("//src/ng_project/config:config.bzl", _ng_project_config = "ng_project_config")
 
-def ng_project_config(name, tsconfig, angular_compiler_options):
+def ng_project_config(name, tsconfig, angular_compiler_options, testonly = False):
     # Create the angularCompilerOptions specific tsconfig file.
     _ng_project_config(
         name = "%s_ng_compiler_options" % name,
         angular_compiler_options = angular_compiler_options,
         tsconfig = tsconfig,
+        testonly = testonly,
     )
 
     # Create the new tsconfig target using the newly created config to extend the provided
@@ -15,4 +16,5 @@ def ng_project_config(name, tsconfig, angular_compiler_options):
         name = name,
         src = ":%s_ng_compiler_options" % name,
         deps = [tsconfig],
+        testonly = testonly,
     )