Adding compound crossbow to itemgrups (#39550)

Added compcrossbow to archery, with weight of 10. Reduced weight of crossbow by same amount (now 70) so that the distribution of items remains undistubed.
Added compound crossbow to home_display_case with weight 20.

data/json/itemgroups/activities_hobbies.json

@@ -209,6 +209,7 @@
       [ "bolt_cf", 5 ],
       [ "bbgun", 10 ],
       [ "crossbow", 2 ],
+      [ "compcrossbow", 2 ],
       [ "mag_survival", 40 ],
       [ "textbook_survival", 20 ],
       [ "modern_tanner", 8 ],

data/json/itemgroups/collections_domestic.json

@@ -1060,6 +1060,7 @@
       [ "throwing_axe", 25 ],
       [ "binoculars", 50 ],
       [ "crossbow", 20 ],
+      [ "compcrossbow", 20 ],
       [ "rapier", 1 ],
       [ "rapier_fake", 10 ],
       [ "cavalry_sabre", 1 ],

data/json/itemgroups/main.json

@@ -234,7 +234,8 @@
     "id": "archery",
     "subtype": "distribution",
     "entries": [
-      { "item": "crossbow", "prob": 80 },
+      { "item": "crossbow", "prob": 70 },
+      { "item": "compcrossbow", "prob": 10 },
       { "item": "bullet_crossbow", "prob": 10 },
       { "item": "hand_crossbow", "prob": 10 },
       { "item": "longbow", "prob": 40 },