Refactor: Improve wallet metadata software & hardware

[maykelxyz]

The idea is to improve wallet metadata starting with wallet url. Currently, our metadata url only includes one url which is fine, but an improvement I would recommend, along with @polymutex is to add more links (github, wallet docs, social media links, extension links (for software wallets), etc)

[polymutex]

Yep. GitHub and website URL are already there, but good things to gather:

• Website URL
• Support multiple repository links (some wallets have multiple; could be per-variant or just a flat list)
• Social media accounts (multiple, all optional)
• Docs link (optional)
• Coinspect wallet ID (optional)
• Chrome web store/Firefox add-ons link/Play Store page/iOS app store page/etc. (all optional)
• Maybe also a freedom array of labeled extra links for wallets where it's useful to link to even more things that aren't on this list.