chore: use code-splitting techniques

[Odonno]

Use code-splitting techniques to reduce initial bundle size and to improve startup time performance.

Improvements made:

• lazy import page components (Query view, Explorer view, etc...)
• lazy import of modules, like lottie-web. It will be fetched on the main page but after the initial bundles
• lazy import json animated data for lottie

Some notes:

• elk can be loaded via web worker, but as it is currently lazy imported when needed, I don't see the need for this
• bundle size reduced by using lottie-light instead of lottie-web, from 7.27MB to 7.04MB (1.83MB -> 1.79MB gzip)
• some vendors cannot be easily lazy imported (e.g. codemirror) => use manualChunks to split each bundle
• splitting in chunks can improve load times by preloading modules in parallel instead of waiting for a single large chunk
• vendor bundles could be cached, if no version upgrade
• set experimentalMinChunkSize to 5000, having too many small chunks can be bad

Remaining:

• icons.tsx are not splitted, should break icon per each file

Before:

After:

[macjuul]

Looks good, thanks!