Add AnchorKit anchor lifecycle state mapper

[El-swaggerito]

Description

Difficulty: Expert

Type: Feature

Summary

Add a lifecycle state mapper for anchor deposit and withdrawal flows.

Current Behaviour

Anchor lifecycle states may be represented inconsistently across packages, examples, and UI.

Expected Behaviour

AnchorKit should provide a shared mapper for pending, processing, completed, failed, expired, and unknown states.

Suggested Implementation

Create state types, mapper utilities, fixtures, web UI integration, tests, and docs.

Files or Areas Likely Affected

• packages/anchor-utils/
• packages/types/
• apps/web/
• examples/
• tests/
• docs/

Acceptance Criteria

• Anchor lifecycle mapper is implemented.
• Major deposit and withdrawal states are represented.
• Unknown and unsupported states are handled.
• Web UI uses the shared mapper.
• Tests cover state mapping.
• Docs explain lifecycle assumptions.

Additional Notes

This supports consistent anchor UX.