NTP SI components for iOS

[petemill]

• Generate new component id/private-key/public-key for each region
• Add region-name/component id/public-key for each region to brave-core-crx-packager
  • iOS component metadata for NTP SI #629
• Add private keys to zip file in 1pw
• Make sure Jenkins has updated zip file
• Include region-name/component id/public-key for each region in brave-core
  • Add iOS crx metadata for NTP SI brave-core#18706

[kylehickinson]

Cherrypicked Pete's commit from brave/brave-core#18706 into this PR: brave/brave-core#18718 so that last point should be good to go