Changed the Code to return tuple in dynamic_programming/subset_generation.py#10189

[airwakz]

Describe your change:

I have made a return tuple available in the subset_generation.py.

• [x] Add an algorithm?
• [x] Fix a bug or typo in an existing algorithm?
• [ ] Documentation change?

Checklist:

• [x ] I have read CONTRIBUTING.md.
• [x] This pull request is all my own work -- I have not plagiarized.
• [x] I know that pull requests will not be merged if they fail the automated tests.
• [x] This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• [x] All new Python files are placed inside an existing directory.
• [x] All filenames are in all lowercase characters with no spaces or dashes.
• [x] All functions and variable names follow Python naming conventions.
• [x] All function parameters and return values are annotated with Python type hints.
• [x] All functions have doctests that pass the automated testing.
• [x] All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
• [x] If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: "Fixes #10189 ".

[airwakz]

@bit-man @darkstar @spazm @horstjens can uh mark it as for hacktoberfest and review my pr

[bit-man]

Sorry @airwakz, but have no review power here

[airwakz]

Sorry @airwakz, but have no review power here

@bit-man I just ask uh guyz to review ot and can uh please add it in hacktoberfest as I am preparing for hacktoberfest