Add Prim's algorithm implementation (using Priority Queue)

[laiba-Ashfaq]

Fix #13400

Implement Prim's algorithm to find the minimum spanning tree of a graph using a priority queue.

Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Add or change doctests? -- Note: Please avoid changing both code and tests in a single pull request.
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
• If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: "Fixes [REQUEST] Add [Prim's Algorithm] in python #13400".

[algorithms-keeper]

Click here to look at the relevant links ⬇️

🔗 Relevant Links

Repository:

• Contributing guidelines
• Project Euler solution guidelines

Python:

• Formatted string literals (f-strings)
• Type hints
• doctest
• unittest
• pytest

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[algorithms-keeper]

As there is no test file in this pull request nor any test function or class in the file data_structures/Prim’s-Algorithm.py, please provide doctest for the function prim_mst

Please provide return type hint for the function: prim_mst. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: graph

Please provide type hint for the parameter: start

[cclauss]

Closing require_tests PRs to prepare for Hacktoberfest

[ShristiC7]

@cclauss i have solved the issue and created a pr which passes all the tests . Could you please check that out.