feat: Refactor --tldr Flag and Repair Test Suite

[gkapfham]

• feat(pyproject.toml): add name to the .toml file.
• add(display.py): change the commands into a dictionary for long term maintainablitiy.
• feat(main.py): change the tldr to set to false so that it can be disabled.
• add(display.py): all the commands in the cli and also their descriptions
• remove(display.py): the poetry command since it can be used with other dependencies.
• remove(diosplay.py): remove the <> in the model and method
• fix(display.py): fix the formatting by running ruff format.
• add(display.py): the <> to the advice method for better readabitlity
• fix(display.py): the advice-method for better clarity on how to run the coding mentor.
• remove(display.py): the .toml file output for more user clarity
• remove(display.py): examples
• fix(pyproject.toml): change version to 0.3.2
• remove(display.py): the 'run' infront of all commands because that is not needed
• coms: Add comments to explain steps and reformat code in the execexam/display.py file.
• coms: Fix a spelling mistake in a comment in the execexam/main.py file.
• test: Add more tests for the command-line interface in the tests/test_main.py file.
• test: Add a test for the --tldr flag of the command-line interface in tests/test_main.py.
• coms: Add comments to tests/test_main.py.
• test: Add test cases to tests/test_main.py for combination of --tldr and --help.
• chore: Remove the coverage.json file as it is generated and then add coverage.json back to .gitignore.
• coms: Add a NOTE reminder about how to perform testing with the tests/test_main.py file.
• test: Add more tests for spelling mistakes of cli arguments in tests/test_main.py.

Pull Request

This PR adds test cases and makes other small improvements to PR #47. Please see that PR for more details about the features provided by this PR.