src: add used_size and free_size to partition data

Extend database table ordenadores_particiones to add new "used_size" and "free_size" fields.

  FIELD       TYPE
| tamano    | bigint   |
| uso       | tinyint  |
| used_size | bigint   |
| free_size | bigint   |

"tamano" is the field storing the total size of the partition.
"uso" is a field storing the integer percentage of use, it is preserved for backwards compatibility with scritps that access the database.
"used_size" and "free_size" contain the used and free partition
size in bytes.

Old response from ogClient for /cache/delete, /cache/fetch
and /image/restore:
{
  'cache': [
    {'name': 'windows.img', 'size': 2432370213, checksum: '5d4dcc677bc19f40a647d0002f4ade90'},
    {'name': 'linux.img', 'size': 243234534213, checksum: '3eb22f888f88a55ad954f55644e1192e'}
  ]
}

New response:
{
  'cache': {
    'used_size': 4520232322423,
    'free_size': 48273465287452945,
    'images': [
      {'name': 'windows.img', 'size': 2432370213, checksum: '5d4dcc677bc19f40a647d0002f4ade90'},
      {'name': 'linux.img', 'size': 243234534213, checksum: '3eb22f888f88a55ad954f55644e1192e'}
    ]
  }
}

Parse the new "free_size" and "used_size" fields of each partition data in the response payload of /refresh

Parse "free_size" and "used_size" fields of the cache data in the reponse payload of /image/restore, /cache/delete and /cache/fetch

Replace "used_size" field of GET /client/setup with the value
of the new database field "used_size"

0 files changed, 0 insertions, 0 deletions