Aggregate current.txt files for AndroidX federation

Bug: 76692459
Test: make docs
Change-Id: I94737fc27f98fd6051fb97878099a3c280d12b70
diff --git a/current/update_androidx-api.sh b/current/update_androidx-api.sh
new file mode 100755
index 0000000..4f1606f
--- /dev/null
+++ b/current/update_androidx-api.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+rm androidx-api.txt; find ../../../frameworks/support/ -name current.txt | grep /api/ | grep -v /ktx/ | xargs cat>>androidx-api.txt
+