feat(space): add direct blockchain space creation module

[method7]

Add new Space module for creating and managing spaces directly on-chain
without going through the HTTP API. This provides more reliable space
creation by interacting with the SpaceRegistry contract directly.

New functions:

• createPersonalSpace(): Creates EOA (personal) space via registerSpaceId()
• publishEditToSpace(): Records IPFS CID on-chain via enter()
• getSpaceId(): Looks up space ID for a wallet address

Also includes:

• Utility functions for parsing space IDs (hex/uuid conversion)
• Constants for space-related contract interactions
• Comprehensive test coverage (25 new tests)

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Latest commit: 64d513d

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