Merging Existing GitHub Gist into NLPurify

[ZenithClown]

:scroll: Description

This PR is an initialization PR to merge the existing code into the NLPurify module. This is a part of the total required changes (#1), and the following changes and fixes are listed below.

This PR brings the following change(s):

• :recycle: Legacy Code(s) are maintained under nlpurify/legacy unless all existing code are migrated.
  • :star2: New Feature - text cleaning using nltk.stopwords, lemmatizations.
  • :star2: New Feature - a collection function to easily switch between different types of fuzzy text matching using fuzzywuzzy.
• :hammer_and_wrench: Breaking Change - upon successful transition the existing GitHub gist will be deleted and will become unusable.

On successful merge, the PR Fixes #2 Fixes #4 Fixes #5

[ZenithClown]

Some of my codes are dependent on the existing structure. This should be made available unless all codes are migrated to the latest changes. Check issue details #5 for more information.