build: switch example e2e tests to bazel (#28402)

* No longer builds the example e2e tests using "tsc". The examples are now built with Bazel and can therefore be built with Ivy by using the `--define=compile=aot` switch.
* No longer runs the example e2e tests using the protractor CLI. example e2e tests are executed with the Bazel protractor rule and can therefore run incrementally.

NOTE: Unit tests found within the examples are still running within the legacy jobs.

PR Close #28402

packages/examples/testing/BUILD.bazel

@@ -0,0 +1,13 @@
+package(default_visibility = ["//visibility:public"])
+
+load("//tools:defaults.bzl", "ts_library")
+
+ts_library(
+    name = "testing_examples",
+    srcs = glob(["**/*.ts"]),
+    tsconfig = "//packages:tsconfig-test.json",
+    deps = [
+        "@ngdeps//@types/jasmine",
+        "@ngdeps//@types/node",
+    ],
+)