WifiResOverlayTetris: Initialize

Squash of the following:
- WifiResOverlayTetris: translatable=false for string resources
- WifiOverlayTetris: Describe using comments the remaining entries
- WifiResOverlayTetris: Kill config_wifiVerboseLoggingAlwaysOnLevel
- WifiResOverlayTetris: Cleanup non-existent config_wifi_random_mac_oui
- WifiResOverlayTetris: Cleanup entries that are defaults
- WifiResOverlayTetris: Cleanup rest of duplicated overlays
- WifiResOverlayTetris: Cleanup duplicate entries with differing values
- WifiResOverlayTetris: Initialize from stock