WIP: Schema tool

[egasimus]

Generate from CosmWasm schema:

• Markdown documents
• Interactive frontend

[egasimus]

Interactive schema browser

The goal is to make it easy to get started with scripting together various projects that expose services on the Cosmosverse. We leave the script writing to the user's preferred editor and the Fadroma SDK. But since neither i10e nor c5t can replace the responsibility of the user to know what's going on in order to get anywhere, we support the interchain ecosystem by publishing well-formatted documentation, API playgrounds, interactive map etc. of all interesting or interested chains. In return, the chains promote our SDK as the fastest way to build and validate any form of persistent blockchain-backed system out of their features.

Null state. Centered	Need to remove this gap.
From the beginning. Name, source, README and constructor first.	Message variants. Need to make values here editable for the buttons to make more sense.

[egasimus]

JSONSchema->Markdown Renderer

Very ad-hoc, basically tries to cover what I've seen cosmwasm-schema and serde do when writing for cosmwasm-std. All types that are part of a contract's API should be automatically extracted by cosmwasm-schema then this script lays them out in a human-readable form. This can be used to quickly distill a frontender-friendly pack of documentation from what the contract devs wrote in the Rust doc strings.

• TODO: Generate TypeScript client classes from the schema
• TODO: How to strip non-API stuff, e.g. doctests, from doc strings?
• TODO: CLI command/CI action for automatically extracting and rendering all schemas from a project