Added solution for Project Euler problem 74.#3125

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dhruvmanila merged 3 commits intoTheAlgorithms:masterfrom fpringle:problem_74

Oct 15, 2020

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Commits on Oct 9, 2020

Added solution for Project Euler problem 74. Fixes: #2695
fpringle
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Commits on Oct 10, 2020

Added doctest for solution() in project_euler/problem_74/sol1.py
fpringle
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Commits on Oct 15, 2020

Update docstrings and 0-padding of directory name. Reference: #3256
fpringle
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