Create java aconfig library for input flags

The flags for the namespace "input" are defined in:
frameworks/native/libs/input/input_flags.aconfig

Include the java aconfig library in the framework.

Bug: 293587049
Test: Build
Change-Id: I54af86eede0f5d3a8f8217002f0309781d2f924c

AconfigFlags.bp

@@ -34,6 +34,7 @@ aconfig_srcjars = [
     ":com.android.window.flags.window-aconfig-java{.generated_srcjars}",
     ":android.hardware.biometrics.flags-aconfig-java{.generated_srcjars}",
     ":com.android.hardware.input-aconfig-java{.generated_srcjars}",
+    ":aconfig_input_flags-java{.generated_srcjars}",
     ":com.android.text.flags-aconfig-java{.generated_srcjars}",
     ":telecom_flags_core_java_lib{.generated_srcjars}",
     ":telephony_flags_core_java_lib{.generated_srcjars}",
@@ -129,6 +130,12 @@ java_aconfig_library {
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
 
+java_aconfig_library {
+    name: "aconfig_input_flags-java",
+    aconfig_declarations: "aconfig_input_flags",
+    defaults: ["framework-minus-apex-aconfig-java-defaults"],
+}
+
 // Text
 aconfig_declarations {
     name: "com.android.text.flags-aconfig",