feat: Rewrite and improve Polkicon - @w3ux/react-polkicon

[rossbulat]

This PR completely rewrites the @w3ux/react-polkicon package, reducing boilerplate, improving readability, and addressing various issues from the previous version.

Major Enhancements

• Fixes an issue where the generated colors were not inline with other platforms like Subscan.
• Completely does away with a size prop in favour of inheriting the nearest element with fontSize assigned, acting more like an inline icon.
• Removes copy functionality completely, giving the Dapp responsibility to implement copy functionality if needed.
• Removes @polkadot/util-crypto in favour of @w3ux/crypto exporting the light weight crypto utility required for Polkicon. Also uses @polkadot-api/substrate-bindings for codecs where needed.
• Completely refactors the Polkicon SCHEMA object and rotation configs taken from JS Apps, making these objects and utility functions more readable and understandable.
• Adds comprehensive comments to each function, accompanied with inline commenting.
• Abstracts and improves types.
• Removes unnecessary expressions carried over from JS Apps that were not relevant to this lightweight Polkicon implementation & that were previously not removed.
• Stopped the package from throwing any errors.
• Simplifies syntax and reduces boilerplate throughout for improved conciseness.

The package is now a well-structured, minimal UI component that Dapps can easily leverage. Significant improvements to the syntax have enhanced readability and maintainability, transforming the codebase from its previously complex and confusing state.