items: add attack range parsing

[tylerwgrass]

Adding scraping for attack range as it's the only missing stat for weapons.

Staves with cast mode (example) have attackrange=staff, but all others have a number range.
Not sure if there's a better alternative than the override I used here.

  "22294": {
    "name": "Uncharged toxic trident (e)",
    "weight": 1.814,
    "equipable": true,
    "equipment": {
      "slot": 3,
      "amagic": 25,
      "dstab": 2,
      "dslash": 3,
      "dcrush": 1,
      "dmagic": 15,
      "attackrange": 7,
      "aspeed": 4
    },
    "ge_limit": 8
  },
  "22296": {
    "name": "Staff of light",
    "weight": 1.5,
    "equipable": true,
    "equipment": {
      "slot": 3,
      "astab": 55,
      "aslash": 70,
      "amagic": 17,
      "dslash": 3,
      "dcrush": 3,
      "dmagic": 17,
      "str": 72,
      "attackrange": 1,
      "aspeed": 4,
      "mdmg": 15.0
    },
    "ge_limit": 8
  },

[abextm]

Do you have a matching pr for arn and the client for this?

[tylerwgrass]

Not yet, I’ll open them

[tylerwgrass]

runelite/runelite#18209