[Governance] Enable x/gov account to remove onchain services

[Olshansk]

Objective

Remove unmaintained, outdated or other legacy onchain services

Origin Document

Lots of users (including Grove employees) usually hit issues where a service has ZERO high-qaulity suppliers.

If these services did not exist, RelayMiners would fail to start.

https://discord.com/channels/553741558869131266/1234943674903953529/1334302035444764733

Goals

• Give x/gov the ability to delete onchain services
• Prevent onchain bloat (garbage collection) as more stale / legacy services are added
• Make RelayMiners fail on non-existenst services by having the foundation / DAO manually clean up those that are unmaintained

Deliverables

• A new autocli command under poktrolld tx service called delete-service
• Validation that only the service owner or x/gov module owner can delete the service
• Sufficient documentation such that this behaviour is searchable in docusaurus

Non-goals / Non-deliverables

• Any smart / complex business logic to automatically clean up unused services based on onchain claims / proofs

General deliverables

• Comments: Add/update TODOs and comments alongside the source code so it is easier to follow.
• Testing: Add new tests (unit and/or E2E) to the test suite.
• Makefile: Add new targets to the Makefile to make the new functionality easier to use.
• Documentation: Update architectural or development READMEs; use mermaid diagrams where appropriate.

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Creator: @Olshansk
Co-Owners: @bryanchriswhite