See also #2397.
Xcode 14.3 introduced the following error:
> Heterogeneous collection literal could only be inferred to '[String :
Any]'; add explicit type annotation if this is intentional
### Changes:
- Added explicit types to fix this new error
- Removed unnecessary `@preconcurrency` imports
- Added new `CustomerInfo.emptyInfo` to reduce duplication of same fake
`CustomerInfo` creation
Simplifies the common pattern in tests:
```swift
expect(array).to(haveCount(1))
let element = try XCTUnwrap(array.first)
```
Into simply:
```swift
let element = try XCTUnwrap(array.onlyElement)
```
## Motivation:
There is no way to run code statically like in Obj-C using `+ [NSObject initialize]`, so this ensures (through a new `SwiftLint` rule) that all test classes inherit this common test class instead of `XCTestCase` directly.
A future PR will make use of this new `CIRCLECI_TESTS_GENERATE_SNAPSHOTS` environment variable to allow regenerating snapshots in CI.
I've also moved the duplicated `CurrentTestCaseTracker` usages to a single point.
* moved test suites to Tests folder
* fixed outdated path
* fixed more outdated paths
* moved TestsPlans to Tests folder
* update path to Constants.swift
NachoSoto