Add federatedcompute stubs and bootclasspath fragment

Test: TH
Bug: 244640209
Change-Id: I364cbe5303333f1e70585840c1bda178135fe22d
diff --git a/api/Android.bp b/api/Android.bp
index 29eaec6..5ebf2260 100644
--- a/api/Android.bp
+++ b/api/Android.bp
@@ -97,6 +97,7 @@
         "framework-bluetooth",
         "framework-connectivity",
         "framework-connectivity-t",
+        "framework-federatedcompute",
         "framework-graphics",
         "framework-media",
         "framework-mediaprovider",