Rich description of current implementation

Currently, we are missing a page where one can read what's under the hood of KodaDot in terms of various NFTs standards across Polkadot.

The goal of this page would be to highlight different implementations on various levels, starting from `system.remark` (RMRK), going through runtime level, like Basilisk NFT marketplace implementation (BSX&SNEK on Rococo), going higher to EVM implementation like MoonRiver & MoonBeam, continuing to Astar ink! WASM smart contracts and all of this in one simple interface under hood of KodaDot with other features coming to unpack like Reactive NFTs

## Generalized
- https://github.com/kodadot/packages/tree/main/sub-api
- https://github.com/kodadot/packages/tree/main/uniquery

## RMRK
- indexer -- rubick - https://github.com/kodadot/rubick
- minimark - https://github.com/kodadot/packages/tree/main/minimark
- other packages we are using here?
- hacks we've used - https://github.com/kodadot/packages/tree/main/metasquid

## RMRKv2
- ongoing https://github.com/kodadot/packages/pull/43

## Basilisk
- indexer Snek - https://github.com/kodadot/snek
- how multi fee payments works under hood
- assets screen maybe?

## Astar (RMRK) - under research
- rmrk pallet - https://github.com/rmrk-team/rmrk-substrate

## MoonRiver & MoonBeam (EVM)
- indexer Click - https://github.com/kodadot/click
- Moonriver collections

## Astar WASM - ink! smart contracts
- under research, hopefully coming 😄

Is anything significant we should mention from our major infrastructure components?

Start by reviewing the generalized sub-api and uniquery packages, then trace the linked RMRK, Basilisk, MoonRiver/MoonBeam, and Astar components. Done should be a single KodaDot page that clearly explains the listed NFT implementations, infrastructure, and relevant missing components, with the research gaps identified.

Written by the indexing model from the issue text.