Created problem_34 in project_euler (#2305)

* Create __init__.py

* Add files via upload

* Rename solution.py.py to solution.py

* Delete __init__.py

* Update and rename solution.py to sol1.py

* Update sol1.py

* Create __init__.py

* Update __init__.py

* Delete __init__.py

* Add files via upload

* Update __init__.py

* Add #\n

* Update sol1.py

Incorporates the proposed changes

* Update sol1.py

* Update sol1.py

* Update project_euler/problem_34/sol1.py

Co-authored-by: Christian Clauss <cclauss@me.com>

* Update project_euler/problem_34/sol1.py

Co-authored-by: Christian Clauss <cclauss@me.com>

* Update project_euler/problem_34/sol1.py

Co-authored-by: Christian Clauss <cclauss@me.com>

* Update project_euler/problem_34/sol1.py

Co-authored-by: Christian Clauss <cclauss@me.com>

* Update sol1.py

* Update sol1.py

* Update sol1.py

* Use int(n) instead of floor(n)

Co-authored-by: Christian Clauss <cclauss@me.com>