Add TEST_MAPPING file for FrameworkInputMethodSystemServerTests

To ensure FrameworkInputMethodSystemServerTests will be included in
presubmit tests and able to demote tests with FlakyTest/Ignore
annotation.

Also import this new TEST_MAPPING file path into IMF server
side's TEST_MAPPING file to ensure tests will be triggered when
modifying files in IMF server package.

Bug: 240359838
Test: atest FrameworkInputMethodSystemServerTests
Change-Id: Ia3594fddce01d822330b28571960e41f0de2d376
diff --git a/services/tests/InputMethodSystemServerTests/TEST_MAPPING b/services/tests/InputMethodSystemServerTests/TEST_MAPPING
new file mode 100644
index 0000000..77e32a7
--- /dev/null
+++ b/services/tests/InputMethodSystemServerTests/TEST_MAPPING
@@ -0,0 +1,13 @@
+{
+  "presubmit": [
+    {
+      "name": "FrameworksInputMethodSystemServerTests",
+      "options": [
+        {"include-filter": "com.android.server.inputmethod"},
+        {"exclude-annotation": "android.platform.test.annotations.FlakyTest"},
+        {"exclude-annotation": "androidx.test.filters.FlakyTest"},
+        {"exclude-annotation": "org.junit.Ignore"}
+      ]
+    }
+  ]
+}