chore!: remove ContractUtils namespaced export

[danielbate]

• Closes Improve contract utils export visibility #3569

Release notes

• Moved contract utilities (e.g. getContractId(), getContractRoot()) to be exported directly from fuels

Summary

Removes the ContractUtils namespaced export and better exposes in typedoc.

Breaking Changes

• ContractUtils was removed and the underlying functions (getContractRoot(), getContractStorageRoot(), getContractId(), hexlifyWithPrefix() are now exported directly from fuels.

// before
import { ContractUtils } from 'fuels';

// after
import { getContractRoot, getContractStorageRoot, getContractId, hexlifyWithPrefix } from 'fuels';

Checklist

• All changes are covered by tests (or not applicable)
• All changes are documented (or not applicable)
• I reviewed the entire PR myself (preferably, on GH UI)
• I described all Breaking Changes (or there's none)

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Name	Status	Preview	Comments	Updated (UTC)
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[github-actions]

Coverage Report:

Lines	Branches	Functions	Statements
77.22%(+0.15%)	70.76%(+0.04%)	75.33%(+0.16%)	77.21%(+0.14%)

Changed Files:

Ok	File (✨=New File)	Lines	Branches	Functions	Statements
🔴	✨ packages/account/src/assets/asset-api.ts	100% (+100%)	85.71% (+85.71%)	100% (+100%)	100% (+100%)
🔴	packages/account/src/providers/transaction-response/transaction-response.ts	76.92% (+0.26%)	64.4% (+0%)	93.75% (+0%)	76.92% (+0.26%)
🔴	packages/account/src/utils/predicate-script-loader-instructions.ts	36.17% (+23.35%)	0% (+0%)	44.44% (+44.44%)	34.69% (+22.5%)