skill calc: add barbarian fishing to agility skill calculator

runelite-client/src/main/resources/net/runelite/client/plugins/skillcalculator/skill_agility.json

@@ -12,6 +12,12 @@
       "name": "Draynor Village Rooftop",
       "xp": 120
     },
+    {
+      "level":15,
+      "icon": 11328,
+      "name": "Leaping trout",
+      "xp": 5
+    },
     {
       "level": 20,
       "icon": 11849,
@@ -30,6 +36,12 @@
       "name": "Penguin Agility Course",
       "xp": 540
     },
+    {
+      "level":30,
+      "icon": 11330,
+      "name": "Leaping salmon",
+      "xp": 6
+    },
     {
       "level": 35,
       "icon": 1365,
@@ -42,6 +54,12 @@
       "name": "Canifis Rooftop",
       "xp": 240
     },
+    {
+      "level":45,
+      "icon": 11332,
+      "name": "Leaping sturgeon",
+      "xp": 7
+    },
     {
       "level": 48,
       "icon": 4026,