[enhancement] BTC funded quasi-VPNs

For many users, Tor level anonymity may be overkill and slow the connection down more than necessary. Proxying your traffic through someone else's ZeroNet node may be sufficient to provide VPN style protection. Since ZeroNet is already BTC friendly, perhaps integrating a lightweight market for such services would be consistent with the overall philosophy of the project?

No files, tests, or entry points are identified in the issue. First clarify the design and scope of a BTC-funded market for proxying traffic through ZeroNet nodes, including how it differs from Tor and what constitutes a complete integration.

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