Fix bazel build, and commit module lock file.

Including:
- Remove WORKSPACE and upgrade to MODULE.bazel.
- The integration tests were not included since the directory was misspelled.
- Their header files were not accessible.

test/BUILD.bazel

@@ -1,14 +1,28 @@
+package(default_visibility = ["//test:__subpackages__"])
+
+cc_library(
+    name = "mock_event_handler",
+    hdrs = ["mock_event_handler.h"],
+    strip_include_prefix = "//test",
+)
+
+cc_library(
+    name = "specexamples",
+    hdrs = ["specexamples.h"],
+    strip_include_prefix = "//test",
+)
+
 cc_test(
     name = "test",
     srcs = glob([
         "*.cpp",
-        "*.h",
-        "integrations/*.cpp",
         "node/*.cpp",
     ]),
     deps = [
+        ":mock_event_handler",
+        ":specexamples",
         "//:yaml-cpp",
         "//:yaml-cpp_internal",
-        "@com_google_googletest//:gtest_main",
+        "@googletest//:gtest_main",
     ],
 )

test/integration/BUILD.bazel

@@ -0,0 +1,14 @@
+cc_test(
+    name = "test",
+    srcs = glob([
+        "*.cpp",
+        "*.h",
+    ]),
+    deps = [
+        "//:yaml-cpp",
+        "//:yaml-cpp_internal",
+        "//test:mock_event_handler",
+        "//test:specexamples",
+        "@googletest//:gtest_main",
+    ],
+)