Updated Lightning service provider page

[Bosch-0]

Closes #744

Made a bunch of updates to this page:

• Changed name of page from Lightning service providers to Lightning services at it covers both LSPS and Lightning Wallet Servers (LWS).
• Made the page more graphically taking heavily from the liquidity page as there is some similar concepts (LSPs open channels + provide inbound liquidity).
• Made it more readable - removed a lot of technical jargon that probably isn't necessary to explain the concept.

As this page is quite long now with the graphics, we could have two pages, one for LSPs and one for LWSs - thoughts?

💻 Live preview

[pavlenex]

Very hard to review when you rename things, as then the diffs show like everything is new, which will slow down things a bit. I suggest we split the rename + changes into two PR's for easier reviewing next time, nevertheless, I'm happy to dive deep into this one and review it as it is.

[Bosch-0]

It's pretty much a whole new page so the whole thing needs a review

[pavlenex]

Alright Sir, in that case I'm on it 🔎

[pavlenex]

A few nits, but overall this content has come a long way. Graphics are fantastic addition in explaining the concept, and I think you did great job simplifying very complex and abstract concepts, great job Bosch!

[pavlenex]

There's an img conflict that needs to be resolved, but otherwise the page looks good to me.

[sbddesign]

Looking very nice! I left lots of grammar and style edits.

[Bosch-0]

Thanks a bunch @sbddesign and @pavlenex , loads of great suggestions. Fixing up some of the bigger changes in my local copy today and will push them for a final update.

[Bosch-0]

Feedback has been addressed

[sbddesign]

@Bosch-0 Thanks for updating, I found a couple of other grammar issues and noted them above.

[sbddesign]

💯