Add translation support for practice checks

[NathanLovato]

For the practice check names we directly process the function names inside of the test scripts. We need to reproduce that when extracting the translation strings.

[Wolfy7]

Hi Nathan.
Can you describe this issue a bit more. I dont get exactly what you mean with

We need to reproduce that when extracting the translation strings.

I guess it has something to do with PracticeTeste.gd or/and maybe with PracticeInfoPanel.gd (set_tests_status)

[NathanLovato]

PracticeTester.gd has a function named _find_test_method_names() Which finds the functions used for testing practices and we then capitalize that and use the generated strings in the user interface to display the requirements the student has to pass in the practice.

These strings are currently not translated at all. They are not even collected when we generate the translation strings in res://i18n/extract.py.

This task thus has two requirements:

• Figure out a way to do the equivalent PracticeTester._find_test_method_names() in extract.py to output all these strings to a new .pot file. The pot files are files used by translators to translate the app's many strings efficiently.
• Translate the strings generated by PracticeTester._find_test_method_names() (the keys of the _test_methods variable)

For the first requirement, ideally we would have extract.py get every practice check/test name from PracticeTester._find_test_method_names(). We can likely achieve that by calling Godot with a script. The script would instantiate every practice script, get the practice check names, and print them all to the standard output. The Python script could then read them all from the standard output through a pipe.

Does it make sense?