Update weapon key method to have conditions

We never want all keys, only ever a subset for the weapon we're currently working on

app/controllers/api/v1/weapon_keys_controller.rb

@@ -1,6 +1,11 @@
 class Api::V1::WeaponKeysController < Api::V1::ApiController
     def all
-        @raids = WeaponKeys.all()
+        conditions = {}
+        conditions[:series] = request.params['series']
+        conditions[:slot] = request.params['slot']
+        conditions[:group] = request.params['group'] unless request.params['group'].blank?
+
+        @keys = WeaponKey.where(conditions)
         render :all, status: :ok
     end
 end