Dynamic BDD-style macros

[Minoru]

Description DYNAMIC_SECTION makes it easy to generate portions of test cases. However, when used inside a BDD scenario, it results in unsightly output when a test fails:

Scenario: move_up() returns true if cursor position changed
      Given: a ListWidget with 3 lines
  cursor on position 2
  moving up and wrap_scroll is false
       Then: true is returned and cursor moves to position 1

As you can see, a couple lines weren't prefixed with BDD terms.

It would be nice to have DYNAMIC_ counterparts to all the BDD macros, so the output looked like this:

Scenario: move_up() returns true if cursor position changed
      Given: a ListWidget with 3 lines
  And given: cursor on position 2
       When: moving up and wrap_scroll is false
       Then: true is returned and cursor moves to position 1

Additional context Add any other context or screenshots about the feature request here.

[ymarcov]

+1

Also for TEMPLATE_LIST_SCENARIO and such (i.e. template analogues for BDD).