Added basic logic for water pistol firing

outline/inputs.input.lx

@@ -5,7 +5,12 @@ input = {
   ]
 
   map = {
-    
+    fire_primary = {
+      mouse = ["left"]
+    }
+
+    reload = { keys = ["key_r"] }
+
     left = { keys = ["key_a", "left"] }
     right = { keys = ["key_d", "right"] }
     up = { keys = ["key_w", "up"] }