🔷 [Epic] QueryAPI Explorer Tab

[Kevin101Zhang]

Description

Introducing a new launchpad within QueryAPI for enhancing the user experience, especially for new users. This Epic will include a wizard that allows users to input their contract filter and select methods and events, generating usable code directly on the Editor page. This quick setup process will make it easier for users to create and manage indexers efficiently.

Additionally, a new tab will serve as the homepage, providing an engaging introduction to QueryAPI. The wizard on this page will guide users through the setup process, making it simple to get started with a new indexer.

Figma file: https://www.figma.com/design/xzxzoxVkZhwsYqgos4fr91/QueryAPI-Landing?node-id=3-1400&t=mYjojog0GAMt01jd-0

#### Explorer + UI
+ [ ] https://github.com/near/queryapi/issues/783
+ [ ] https://github.com/near/queryapi/issues/879
+ [ ] https://github.com/near/queryapi/issues/878
+ [ ] https://github.com/near/queryapi/issues/872
+ [ ] https://github.com/near/queryapi/issues/893
+ [ ] https://github.com/near/queryapi/issues/906
+ [ ] https://github.com/near/queryapi/issues/795
+ [ ] https://github.com/near/queryapi/issues/836

#### UI Specific
- [ ] https://github.com/near/queryapi/issues/794
- [ ] https://github.com/near/queryapi/issues/925

#### Additional Tickets Added