Feature Request: Add preview for "Host metrics" in Payload Data

[xarleyn]

PORTDUINO (Linux native) hardware can send host metrics in a telemetry packet, but Malla doesn't show decoded data for:

Host metrics description from protobuf:

/* Linux host metrics */
typedef struct _meshtastic_HostMetrics {
    /* Host system uptime */
    uint32_t uptime_seconds;
    /* Host system free memory */
    uint64_t freemem_bytes;
    /* Host system disk space free for / */
    uint64_t diskfree1_bytes;
    /* Secondary system disk space free */
    bool has_diskfree2_bytes;
    uint64_t diskfree2_bytes;
    /* Tertiary disk space free */
    bool has_diskfree3_bytes;
    uint64_t diskfree3_bytes;
    /* Host system one minute load in 1/100ths */
    uint16_t load1;
    /* Host system five minute load  in 1/100ths */
    uint16_t load5;
    /* Host system fifteen minute load  in 1/100ths */
    uint16_t load15;
    /* Optional User-provided string for arbitrary host system information
 that doesn't make sense as a dedicated entry. */
    bool has_user_string;
    char user_string[200];
} meshtastic_HostMetrics;

Decoded packet example:

{
      "portnum": 67,
      "payload": "420f08cfd902108080bf5e1880a096b044",
      "want_response": null,
      "dest": null,
      "source": null,
      "request_id": null,
      "reply_id": null,
      "emoji": null,
      "parsed_payload": {
        "host_metrics": {
          "uptime_seconds": 44239,
          "freemem_bytes": "198164480",
          "diskfree1_bytes": "18354638848"
        },
        "type": "protobuf",
        "portnum": "TELEMETRY_APP",
        "message_class": "Telemetry"
      }
    }

I think Copilot could easily implement this.