include_topologies: Vec<Pubkey> on Tenant account

[ben-malbeclabs]

Append include_topologies: Vec<Pubkey> to the serviceability Tenant account. Foundation-only authorization. Empty vec defaults to color 1 (UNICAST-DEFAULT).

Milestone: RFC-18: Onchain Foundation
RFC: #3288

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Files affected:

• smartcontract/programs/doublezero-serviceability/src/state/tenant.rs
• smartcontract/programs/doublezero-serviceability/src/processors/tenant/

Size: Small

Tests:

• Non-foundation key rejected
• Invalid pubkey rejected
• Empty vec accepted and resolves to color 1 (UNICAST-DEFAULT)

Blockers: #3344 (TopologyInfo account)

[ben-malbeclabs]

Implemented in #3497 (RFC-18 PR 1).