Consistent example applications

[krulod]

Currently, we have multiple Reatom demos showing how to use the library to solve tasks with frameworks like React or Vue.

First of all, it would be nice to use some UI kit to make the demos look fine and consistent. We found Carbon Design System to be a great choice since it's framework-independent and well-maintained.

Then, demos should include a relatively complex application implemented with every framework. We chose to clone GitHub's Issues page because it allows us to demonstrate how data fetching, pagination and filtering can be implemented with Reatom.

So the complete list of tasks is as follows:

• implement the GitHub Issues page with Vue
• implement the GitHub Issues page with React
• implement the GitHub Issues page with Lit
• implement the GitHub Issues page with Solid
• implement the GitHub Issues page with Svelte
• migrate existing demos to Carbon Web Components