Add support to hide developer tile based on a flag

Define new meta-data option for development tiles that can be used to
specify a sysprop flag.
If this meta-data is present, the value will be used as the flag name
that has to be enabled for the preference to show up.

Bug: 248363970
Test: atest SettingsRoboTests:DevelopmentTilePreferenceControllerTest
Change-Id: I66d56777a6290d7fee739492bd2871f637791d75