Script Generator: Ability to collapse and expand parameters for each action

As a user of the script definition, I want to be able to view action parameters in a collapsible structure instead of as columns in a table. This has been achieved for another script generator (the reflectometry script generator) which can provide insight as to how it should look.

There are a few advantages including:

- The hiding of an overwhelming amount of information
- The ability to contain lots of parameters in a single action without making the table columns too small
- The ability to have a different amount of parameters for each action (which will be important when we want to be able to have different types of actions in a single script)

## Acceptance criteria:

- [ ] I can switch between the collapsible and table views (please think carefully about the control of this so we don't continue to overload the user with grey text buttons)
- [ ] In the collapsible view I can expand and collapse an individual action's parameters
- [ ] Read-only columns on the left and right are not collapsed in collapsible mode
- [ ] Validity is displayed clearly on the action and hovering over an invalid action gives a tooltip describing the problem
- [ ] Shortcuts implemented for the table that may apply to the collapsible view are considered carefully in this ticket
- [ ] Actions can be recorded, copied, pasted, added, inserted, removed and duplicated in the same way
- [ ] When changing script definition the currently selected view is kept

## Notes:

- This doesn't have to be achieved by a table structure
- Shortcuts implemented for the table such as tabbing may have to be considered carefully in this ticket