[Mercedes-AMG] Check ECU-TEST artifacts location

[msauren]

Description

As an architect of ECU-TEST workspaces I want to keep workspaces as structured as possible and prohibit storing ECU-TEST
artifacts in sub folders where they don't belong.

Expected Behaviour

• the custom check should fail if a .xam is stored outside of folder 'Parameters'
• the custom check should fail if a .gcd is stored outside of folder 'Parameters'
• the custom check should fail if a .ppd is stored outside of folder 'Parameters'
• the custom check should fail if a .prj is stored outside of folder 'Packages/test_lists'
• the custom check should fail if a test case .pkg is stored outside of folder 'Packages/test_cases'
• the custom check should fail if a library .pkg is stored outside of folder 'Packages/lib'