Add spaces between functions and triggers in schema.rb

I've been dealing with the changes to schema_dumper in Rails 8.1 and
Senic 1.9 and found that it's most common for their methods not to emit
a newline after their last operation.

Hence I think it's safe to assume that functions() and triggers() should
emit a newline before their loops and within their loops, up to the last
iteration.
And, not having these functions emit a final newline holds with the pattern
used by the Rails and Scenic schema_dumpers.

I've tested this in my own apps with a patch on this gem and the spacing
is correct with the new Rails 8.1 schema changes (and with Scenic
emitting `create_view` statements before the `create_function` and
`create_trigger` statements).

Author: chiperific

lib/fx/schema_dumper.rb

@@ -20,22 +20,22 @@ def tables(stream)
     def functions(stream)
       dumpable_functions_in_database = Fx.database.functions
 
-      dumpable_functions_in_database.each do |function|
+      stream.puts
+
+      dumpable_functions_in_database.each_with_index do |function, index|
         stream.puts(function.to_schema)
+        stream.puts unless index == dumpable_functions_in_database.size - 1
       end
-
-      stream.puts if dumpable_functions_in_database.any?
     end
 
     def triggers(stream)
       dumpable_triggers_in_database = Fx.database.triggers
 
-      if dumpable_triggers_in_database.any?
-        stream.puts
-      end
+      stream.puts
 
-      dumpable_triggers_in_database.each do |trigger|
+      dumpable_triggers_in_database.each_with_index do |trigger, index|
         stream.puts(trigger.to_schema)
+        stream.puts unless index == dumpable_triggers_in_database.size - 1
       end
     end
   end