fix: Fix imports and remove unnecessary peer dependency

[kujtimprenku]

Description

• Remove un-necessary peerDependency from core package
• Remove individual imports of @near-js/ packages , mixing the @near-js/* and near-api-js can lead to mismatch of versions keep imports to near-api-js for consistency.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

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• CHORE - a PR introduces other changes than the specified above.

[frol]

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