[Passpoint] Add API to check if Passpoint T&C is supported

Add API to check if Passpoint T&C is supported, to allow
provisioning apps to avoid suggesting networks that are gated by
T&Cs acceptance, in devices that do not support this feature and
could never connect.

Bug: 181581415
Test: atest WifiManagerTest
Change-Id: Ic764edb39007e05b371f37296f619a0f003690d8
diff --git a/framework/api/current.txt b/framework/api/current.txt
index 980a89c..0f4b1ea 100644
--- a/framework/api/current.txt
+++ b/framework/api/current.txt
@@ -360,6 +360,7 @@
     method public boolean isEnhancedPowerReportingSupported();
     method public boolean isMakeBeforeBreakWifiSwitchingSupported();
     method public boolean isP2pSupported();
+    method public boolean isPasspointTermsAndConditionsSupported();
     method public boolean isPreferredNetworkOffloadSupported();
     method @Deprecated public boolean isScanAlwaysAvailable();
     method @RequiresPermission(android.Manifest.permission.ACCESS_WIFI_STATE) public boolean isScanThrottleEnabled();