Option to copy API Keys in the LoRa Basics Station Base64 format

[KrishnaIyer]

Summary

Add an option to copy API Keys in the LoRa Basics Station Base64 format.

Why do we need this?

It's convenient to do this so that users don't have to use a terminal for the conversion.

What is already there? What do you see now?

Users need to use a terminal to convert the key https://www.thethingsindustries.com/docs/gateways/lora-basics-station/cups/#cups-key-file

What is missing? What do you want to see?

Add an option to get the key in the console directly converted.

Environment

TTS v3.18.2

How do you propose to implement this?

Better left to the console experts.

How do you propose to test this?

🐒

Can you do this yourself and submit a Pull Request?

Can help test

[KrishnaIyer]

Moving this out of a milestones. Goldplating items are open to be picked up anytime.