Split 'Test.Iris.Cli' into multiple modules #108

Currently, all tests for CLI parsing are in a single Test.Iris.Cli module

• https://github.com/chshersh/iris/blob/main/test/Test/Iris/Cli.hs

I would like to have a tree-like structure for tests that mirrors the library module hierarchy. This requires splitting this module into several ones and moving corresponding tests into them:

• Test.Iris.Cli.Help: for --help tests
• Test.Iris.Cli.Version: for --version and --numeric-version tests
• Test.Iris.Cli.Interactive: for --no-input and interactivity check
• Test.Iris.Cli.Conflict: for conflict tests