#420 Add api for creating a project

[Only-bottle]

Description

Please include a summary in English, of the changes in this pull request. If it closes an issue, please mention it here.

Closes: #420

You should link at least one existing issue for PR. Before your create a PR, please check to see if there is an issue for this change.
PRs from forked repository not accepted.

Change(s)

• Add create_project function to project service.
• Fix the get_db function to manage db session.
• Add exception for project.

Memo

• Needs to add project duplicate check logic.