feat: Add getAllOwnedSafes endpoint

[jmealy]

Add support for a new endpoint getAllOwnedSafes safe-global/safe-client-gateway#1097

GET /v1/owners/{address}/safes

[github-actions]

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Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

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^{Report generated by eslint-plus-action}