feat(brightness suw): add brightness preferences in suw

Add brightness level and auto brightness preference in
accessibility_settings_for_setup_wizard.xml. Since the flagging has not
be supported yet for non-Manifest resources, for now we add the
preferences by default, and update the preferece availablity status in
each preference controllers based on the flag.

Bug: 311093618
Flag: ACONFIG com.android.settings.accessibility.add_brightness_settings_in_suw DEVELOPMENT
Test: manually
      atest AccessibilitySettingsForSetupWizardTest
      atest AutoBrightnessPreferenceFragmentForSetupWizardTest
      atest AutoBrightnessPreferenceControllerTest
      atest BrightnessLevelPreferenceControllerTest
Change-Id: I350d99138bdd14bf28828a39e42f707b5b1066c1