Add a page that lists all of the user REPL

[amoutonbrady]

Context

At the moment 100% of the shared playground are store in a Cloudflare KV store.
That means that every REPL that's being shared are anonymous.
The issue is that people can't get a list of all of their REPL.
Implementing the Solid account strategy would allow us and our users to bypass this limitation.

User Stories

• As an authenticated user, when I load the playground, a modal with a list of all of my REPL is displayed, I can either pick one which loads the code or create a new one.

Functional rules

Given	When	Then
I'm on the playground	-	I have a modal with a list of all of my past saved REPLs
I'm on the modal with the REPLs	I click on one of my REPL	The code of this REPL is loaded into the playground
I'm on the modal with the REPLs	I click on "Create a new REPL"	A new REPL with the default template is loaded

Technical details

• We could totally inspire ourselves from existing sandbox websites: codesandbox, codepen, stackblitz, etc.
• We can list the REPL of a user via the following endpoint: https://github.com/solidjs/solid-service-api#list-get-repllimitoffsetasc
• The API repository with the documentation that comes with it is located here: https://github.com/solidjs/solid-service-api
• The API is hosted here: https://api.solidjs.com