added cypress boundary tests, intergration tests and black box tests

frontend/cypress.json

frontend/cypress/fixtures/example.json

frontend/cypress/integration/1-getting-started/todo.spec.js

...d/cypress/integration/2-advanced-examples/actions.spec.js

.../cypress/integration/2-advanced-examples/aliasing.spec.js

...ypress/integration/2-advanced-examples/assertions.spec.js

...ypress/integration/2-advanced-examples/connectors.spec.js

...d/cypress/integration/2-advanced-examples/cookies.spec.js

...press/integration/2-advanced-examples/cypress_api.spec.js

...end/cypress/integration/2-advanced-examples/files.spec.js

...ess/integration/2-advanced-examples/local_storage.spec.js

.../cypress/integration/2-advanced-examples/location.spec.js

...tend/cypress/integration/2-advanced-examples/misc.spec.js

...ypress/integration/2-advanced-examples/navigation.spec.js

.../integration/2-advanced-examples/network_requests.spec.js

.../cypress/integration/2-advanced-examples/querying.spec.js

...ntegration/2-advanced-examples/spies_stubs_clocks.spec.js

...cypress/integration/2-advanced-examples/traversal.spec.js

...cypress/integration/2-advanced-examples/utilities.spec.js

.../cypress/integration/2-advanced-examples/viewport.spec.js