ocean.js p2p

[giurgiur99]

Fixes #149

Changes proposed in this PR:

• Upgrade @oceanprotocol/lib from v6 to v7.0.0-next.6
• Allow localhost connections by overriding the connectionGater. The default blocks localhost connections
• Add transparent P2P support — NODE_URL accepts both HTTP URLs and bare peer IDs, the lib routes automatically
• Fix v6->v7 API signature changes:
• initializeCompute: pass consumerAddress string instead of Signer
• computeStatus: pass Signer instead of address string (now signerOrAuthToken)
• getDownloadUrl: handle dual return type (string for HTTP, DownloadResponse for P2P)
• downloadJobResults: use streaming getComputeResult instead of getComputeResultUrl (works for both transports)
• CI: matrix strategy runs system tests over both HTTP and P2P in parallel

[ndrpp]

lgtm