Add: [EN] shop_port

[nEEtdo0d]

Adopts existing shop template style, similar to shop_voucher. Aware of the other PR but wanted to start off from what I was familiar with and has native features which taken from the Research task for example. Did take some ideas, haha:

• Did different naming convention for some items. Felt they weren't grouped well together so tried to generalize them.
• Found the "new" border is removed after being seen once after you click back into the shop it is removed
• Presets is a good idea since it is a pretty big collection of items

Enabled EN only, other servers may need to alter the shop_grid numbers / pixels and give it a go to try it out. It was the case for shop_voucher. As far as testing I've done, seems stable.

If other PR is preferred as it might cater better than mine does. I'd like to suggest adopting the "BuyFrequency" configuration that I think makes sense for this type of task. I figured with how the port shops are now, you either want to check everyday, once a week, or wait until the last week. In most cases, I've found I don't have enough currency until at least a days have passed during or after opsi explore or until just a few days before reset.

Comments are welcome, I'll at least be using mine until a official release for this type of task.