Add test scripts for core UI

[adecler]

NOTE: Depends on

https://github.com/BHoM/BHoM_Engine/pull/2251 https://github.com/BHoM/Test_Toolkit/pull/311

Issues addressed by this PR

Closes #347

This provides 3 series of tests:

• Make sure that all items available from the components' menu can be used to generate a valid component
• Test if all the possible components in the BHoM can be copied/saved without error
• Check that all parameters (input/output) are handled correctly without error. This uses a dummy component that behaves exactly like the other to the difference that it doesn't run the selected item and generates dummy outputs of the expected types instead.

Test files

Use the TestRunner with the UI argument

[adecler]

FYI, I have now rebased this branch to make sure it merges nicely with the master

[FraserGreenroyd]

@BHoMBot check installer

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, `check-installer` task is now queued.

[FraserGreenroyd]

@BHoMBot check copyright compliance

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, `check-copyright-compliance` task is now queued.