ALEPH-615 Expose resources for executions

[olethanh]

Add a new resources field on existing endpoint /v2/about/executions/resources to expose resources for instances

Related ClickUp, GitHub or Jira tickets : ALEPH-615

Opening this PR so we can discuss what info we need and the format.

Examples of what this endpoint will return, this is basically the same endpoint with added resource field.

{
  "decadecadecadecadecadecadecadecadecadecadecadecadecadecadecadeca": {
    "networking": {
      "ipv4_network": "172.16.4.0/24",
      "host_ipv4": "64.227.122.196",
      "ipv6_network": "2a01:e0a:8b1:95e1:3:deca:deca:dec0/124",
      "ipv6_ip": "2a01:e0a:8b1:95e1:3:deca:deca:dec1",
      "ipv4_ip": "172.16.4.2",
      "mapped_ports": {
        "22": {
          "host": 24001,
          "tcp": true,
          "udp": false
        }
      }
    },
    "resources": {
      "vcpus": 1,
      "memory": 512,
      "disk_mib": 2048,
    },
    "status": {
      "defined_at": "2025-09-16 13:35:18.983564+00:00",
      "preparing_at": "2025-09-16 13:35:19.012594+00:00",
      "prepared_at": "2025-07-29 11:11:35.853427",
      "starting_at": "2025-07-29 11:11:35.891511",
      "started_at": "2025-09-16 13:35:19.075488+00:00",
      "stopping_at": null,
      "stopped_at": null
    }
  }
}

[codecov]

Codecov Report

❌ Patch coverage is 55.55556% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 64.76%. Comparing base (105c7f0) to head (23087df).

Files with missing lines	Patch %	Lines
src/aleph/vm/orchestrator/utils.py	55.55%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #833      +/-   ##
==========================================
+ Coverage   64.68%   64.76%   +0.08%     
==========================================
  Files          88       88              
  Lines        8160     8169       +9     
  Branches      734      737       +3     
==========================================
+ Hits         5278     5291      +13     
+ Misses       2653     2647       -6     
- Partials      229      231       +2     

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[odesenfans]

Why do we need this if it's coming from the message itself? I don't like that the node can report whatever it wants.