add getP2pNetworkStats route

[alexcos20]

Changes proposed in this PR:

• add a new http route called "getP2pNetworkStats" that exposes stats about the p2p network
• used for debuging, as it gives extended information about networking
• you MUST set env P2P_ENABLE_NETWORK_STATS=TRUE to enable, as it contains private data

Example output:

{
  "binds": [
    "/ip4/0.0.0.0/tcp/9000",
    "/ip4/0.0.0.0/tcp/9001/ws",
    "/ip6/::1/tcp/9002",
    "/ip6/::1/tcp/9003/ws"
  ],
  "listen": [
    "/ip4/127.0.0.1/tcp/9001/ws",
    "/ip4/10.255.255.254/tcp/9001/ws",
    "/ip4/172.23.54.159/tcp/9001/ws",
    "/ip4/127.0.0.1/tcp/9000",
    "/ip4/10.255.255.254/tcp/9000",
    "/ip4/172.23.54.159/tcp/9000",
    "/ip6/::1/tcp/9002"
  ],
  "observing": [
    "/ip4/188.27.96.232/tcp/49714",
    "/ip4/188.27.96.232/tcp/49794",
    "/ip4/188.27.96.232/tcp/49776",
    "/ip4/188.27.96.232/tcp/49766",
    "/ip4/188.27.96.232/tcp/49800",
    "/ip4/188.27.96.232/tcp/49742",
    "/ip4/188.27.96.232/tcp/49710",
    "/ip4/188.27.96.232/tcp/49718",
    "/ip4/188.27.96.232/tcp/49724",
    "/ip4/188.27.96.232/tcp/49752"
  ],
  "announce": [],
  "connections": [
    {
      "id": "daccn21723732444140",
      "remoteAddr": "/dns4/node2.oceanprotocol.com/tcp/9000/p2p/16Uiu2HAmHwzeVw7RpGopjZe6qNBJbzDDBdqtrSk7Gcx1emYsfgL4",
      "remotePeer": "16Uiu2HAmHwzeVw7RpGopjZe6qNBJbzDDBdqtrSk7Gcx1emYsfgL4",
      "direction": "outbound",
      "timeline": {
        "open": 1723732444022,
        "upgraded": 1723732444140
      },
      "multiplexer": "/yamux/1.0.0",
      "encryption": "/noise",
      "status": "open",
      "transient": false,
      "tags": []
    },
    {
      "id": "28zl101723732444171",
      "remoteAddr": "/dns4/node4.oceanprotocol.com/tcp/9000/p2p/16Uiu2HAmSTVTArioKm2wVcyeASHYEsnx2ZNq467Z4GMDU4ErEPom",
      "remotePeer": "16Uiu2HAmSTVTArioKm2wVcyeASHYEsnx2ZNq467Z4GMDU4ErEPom",
      "direction": "outbound",
      "timeline": {
        "open": 1723732444034,
        "upgraded": 1723732444171
      },
      "multiplexer": "/yamux/1.0.0",
      "encryption": "/noise",
      "status": "open",
      "transient": false,
      "tags": []
    }
  ]
}