Add manual connect notification

Add a notification to notify user to use satellite.

Fix: 350397109
Test: manual produce, cancel, and override the notification
Test: basic voice call + data browsing
Test: unit test
Flag: com.android.internal.telephony.flags.carrier_roaming_nb_iot_ntn

Change-Id: I51b31814133643bed7c624a8e1f85f29dd7f4676