DOCUMENTATION: API documentation and notes on the leptos builder syntax covering the different parts of the framework. Can also be separate chapters altogether

Is your feature request related to a problem? Please describe. I've been writing leptos purely using the builder syntax and it's delightfully compatible with rust tooling, primarily doing everything via rust-analyzer. I don't need to deal with macro weirdness including false "unused" warnings.

Describe the solution you'd like Would be awesome to have some documentation on how to use the different documented features via the builder syntax, specifically which APIs to reach for. Ideally a section in the official documentation pages for each feature and its corresponding builder syntax