Add ⚡️ content to Getting Started > Software overview

[pavlenex]

Describe your content request

It's been discussed on a Jam Session Call 13 that we open up the issues for the pages in the Getting Started section that should be revised and require Lightning Network content. Google Doc here

Link to the page

https://bitcoin.design/guide/getting-started/software/

Please add a link to the page you're requesting content change for (if applicable)

** Discussing what needs to be added to the page**

Please, review the current state of the page and feel free to discuss what kind of LN content should be added (if any).

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[pavlenex]

@sbddesign mentioned we should:

• add Lightning explorers
• Talk about lightning in all relevant places (wallets etc)

[Bosch-0]

I opened a discussion about this a couple weeks ago also for some other suggestions: #444

[danielnordh]

Created a doc with the existing content and will start to comment and suggest changes:
https://docs.google.com/document/d/1p534PoTgBfqJvQGX4K2gpOwt8iDoINGitB9Td1Io-3c/edit?usp=sharing

[danielnordh]

Updates now in this PR - #473

[danielnordh]

PR for the changes available here #473