feature: migrate NFT fetching to the casper wallet core (#1074)

* update account balances fetching

* fix issues with balances and update playwright

* use casper wallet core for fetching cep18 tokens

* migrated NFT fetching to the casper wallet core

* fix key error

* Add contract nft package icon

* feature: migrate validators fetching to the casper wallet core (#1076)

* migrate validators fetching to the casper wallet core

* feature: migrate on Ramp fetching to the casper wallet core (#1077)

* migrate on Ramp fetching to the casper wallet core

* removed the old version of the react-query (#1078)

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Co-authored-by: Dmytro Vynnyk <[email protected]>