refactor(wallets): use @hub3js namespace packages over wallets-core

[llawliet-l-l]

Summary

Migrates the repo to consume the standalone @hub3js/* namespace packages instead of @rango-dev/wallets-core's namespaces/* subpaths. Five namespaces move to hub3js (starknet, stellar, sui, ton→tvm, xrpl); utxo and tron stay on @rango-dev/wallets-core

Changes

• Repoint namespace imports to hub3js: wallets-core/namespaces/{starknet,stellar,sui,ton,xrpl} → @hub3js/{starknet,stellar,sui,tvm,xrpl} (ton maps to @hub3js/tvm).
• Leave wallets-core/namespaces/{utxo,tron}, /legacy, /utils, and /dist/legacy/* on @rango-dev/wallets-core.
• Update @hub3js/* dependencies to their latest npm versions across 39 package.json files: core@^0.61.0, std@^0.2.0, evm/solana@^0.3.0, starknet/stellar/sui/tvm/xrpl/namespaces@^0.2.0.

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• Implemented a user interface (UI) change, referencing our Figma design to ensure pixel-perfect precision.

[arlert-armin]

Could you also update the readme as part of this migration? Scope is a single file: wallets/core/readme.md. Everything else should stay as-is — the providers, wallets-react and wallets-shared all still live in this repo, so their readmes shouldn't point away.

Suggestion: add a deprecation banner + an import mapping table to wallets/core/readme.md, pointing at https://github.com/rango-exchange/hub3js

Old	New
@rango-dev/wallets-core	@hub3js/core
.../store	@hub3js/core/store
.../utils	@hub3js/core/utils
.../namespaces/common	@hub3js/namespaces + @hub3js/std
.../namespaces/evm	@hub3js/evm
.../namespaces/solana	@hub3js/solana
.../namespaces/starknet	@hub3js/starknet
.../namespaces/stellar	@hub3js/stellar
.../namespaces/sui	@hub3js/sui
.../namespaces/ton	@hub3js/tvm
.../namespaces/xrpl	@hub3js/xrpl
.../namespaces/tron, /utxo, /cosmos, /legacy	not migrated yet — still served from this package

Two notes that affect the wording:

• The deprecation isn't complete yet. @hub3js/tron and @hub3js/utxo only exist as 0.0.0-experimental-* on npm, there's no @hub3js/cosmos, and legacy has no counterpart — meanwhile 216 imports of @rango-dev/wallets-core/legacy and 82 of .../namespaces/utxo are still in the tree. So the banner should read "moved, migration in progress" rather than implying the package is dead.
• @hub3js/tvm is the TON package (used by provider-tonconnect and wallets/react), not Tron — easy to get backwards in a mapping table.

[arlert-armin]

LGTM