feat: IntegrationTests infrastructure (WPB-4329)

[alexandreferris]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

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What's new in this PR?

This is a follow-up on #2074 (as it had to be reverted due to HttpClientEngine not being visible in AR`) so I have added a wrapper class for it from Kalium side.

Issues

We did not have integration tests in our code base.

Causes (Optional)

It was never implemented

Solutions

Create new module tango-tests for integration tests.
Currently it consists of:

• Tests (as a POC we only have PocIntegrationTest) which contains only 2 tests:

  • Getting ACME directories (while manipulating the network state (Not Connected, Connected with No Internet, Connected with Internet)
  • Login -> Register Client -> Logout flow

• CommonResponses: where it acts as an object to hold common info for tests (such as BASE_URL, and some common DTOs for now)

• Actions: Login/Client/ACME actions in order to provide all necessary requests/responses for specific flows so whenever we increase integration tests we don't need to copy/paste/duplicate code.

Current Issue:
util: this one we haven't managed to access the same files from network module so for now as a POC we only duplicated those classes into this new module, but our goal is to be able to access those Json mocks/values without having to duplicate them, or even have them somewhere it is easily accessible elsewhere apart from its own module.

Testing

Test Coverage (Optional)

• I have added automated test to this contribution

How to Test

• Tests should run successfully

Notes (Optional)

This is a POC to be presented in our collective, if you do have any feedback feel free to add it here and we can also discuss it later.

[github-actions]

Unit Test Results

   439 files  +1     439 suites  +1   3m 14s ⏱️ +54s
2 389 tests +2  2 285 ✔️ +2  104 💤 ±0  0 ❌ ±0 

Results for commit fc41570. ± Comparison against base commit 882fbf9.

♻️ This comment has been updated with latest results.

[datadog-wireapp]

Datadog Report

All test runs bd94242 🔗

✅ 2 Total Test Services: 0 Failed, 0 with New Flaky, 2 Passed

Test Services

Service Name	Failed	Known Flaky	New Flaky	Passed	Skipped	Wall Time	Branch View
kalium-ios	0	0	0	2163	121	6m 10.07s	Link
kalium-jvm	0	0	0	2285	104	14m 18s	Link