Extract SwitchInputMapperTest to its own file

Bug: 245989146
Test: atest frameworks/native/services/inputflinger/tests/SwitchInputMapper_test.cpp
Flag: TEST_ONLY
Change-Id: I7d6eaa72bcee96cf1bf5bce0e4cfdc04c7d0991d
diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index 65e0429..b2fd391 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -78,6 +78,7 @@
         "PropertyProvider_test.cpp",
         "RotaryEncoderInputMapper_test.cpp",
         "SlopController_test.cpp",
+        "SwitchInputMapper_test.cpp",
         "SyncQueue_test.cpp",
         "TimerProvider_test.cpp",
         "TestInputListener.cpp",