Use bzlmod in kotlin example (#7162)

* use bzlmod in kotlin project

* Update simple_project.bazelproject

examples/kotlin/simple_project/.bazelrc

@@ -0,0 +1 @@
+common --legacy_external_runfiles #https://github.com/bazelbuild/rules_kotlin/issues/1241

examples/kotlin/simple_project/BUILD

@@ -27,7 +27,6 @@ kt_jvm_test(
     test_class = "test.lib.GreetingTest",
     deps = [
         ":greeting_lib",
-        "@com_google_guava_guava//jar",
         "@junit//jar",
         "@truth//jar",
     ],

examples/kotlin/simple_project/MODULE.bazel

@@ -0,0 +1,31 @@
+bazel_dep(
+    name = "rules_java",
+    version = "8.3.1",
+)
+
+bazel_dep(
+    name = "rules_kotlin",
+    version = "2.0.0",
+)
+
+bazel_dep(name = "rules_jvm_external", version = "6.6")
+
+maven = use_extension("@rules_jvm_external//:extensions.bzl", "maven")
+maven.install(
+    name = "maven",
+    artifacts = [
+        "junit:junit:4.13.2",
+        "com.google.truth:truth:1.4.4",
+    ],
+    fail_if_repin_required = True,
+    generate_compat_repositories = True,
+    lock_file = "//:maven_install.json",
+)
+
+use_repo(
+    maven,
+    "maven",
+    "unpinned_maven",
+    junit = "junit_junit",
+    truth = "com_google_truth_truth",
+)