Refactoring

[haesleinhuepf]

The code in _ai_github_utilities.py is a bit polluted. Create a new folder _ai_github_utilities and move the function "comment_on_issue" to a "comment_on_issue.py" file. Also move all functions that are used in "comment_on_issue" to the same file. Also create a "solve_issue" file with the same strategy. If there are functions called from comment_on_issue and solve_issue, put them in utilities.py in the same folder. Also create a init.py in the same folder that imports all functions which were formerly located in _ai_github_utilities.py .

Make sure the code is still runnable and avoid breaking changes under all circumstances.

git-bob implement this.