Create issue template

Create an issue template to serve as an option for people creating issues.

Templates should probably line up with conventional commits:

• bug
• feat
• chore
• ci
• fix/patch

Note: adding an issue involves creating a .gitlab folder within the project itself, which differs from the existing .gitlab-ci that currently exists. Proposing we rename the existing .gitlab-ci folder to .gitlab, and move the what's currently in the root of that to a .gitlab/ci to tidy things up. This is pretty similar to how github does it with the .github folder.

@zdzielinski ^