added recursive linear search

[Rushikesh-Khode]

added the recursive implementation of the linear search. Which accepts the array and target as input and returns the index of the target in the array.

Describe your change:

added recursive linear search to the search directory. It is a recursive implementation of the linear search algorithm. it takes 2 inputs array and target and returns the index of the target in the given array else return -1 if the element is not found in the array.

• [x] Add an algorithm?
• [ ] 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.
• [ ] 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 have a URL in their comments that points to Wikipedia or other similar explanations.
• [x] If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[stale[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[poyea]

Please make sure the code passes pre-commit checks.

[cclauss]

In preparation for that denial-of-service attack that is Hacktoberfest, I am closing all pull requests that do not have passing tests.