[EPIC] Document how to report bugs and request features

[emmalu]

Context

Lonboard is gaining traction. As people continue to adopt, there may be more activity, feature requests and discovery of bugs (or user errors).

Issue

We should define the process for users to report possible bugs & feature requests.
Use this thread for reference: #363 (comment)

Acceptance-Criteria

• Create a Bug Issue Template #383
• Create a Feature Request Issue Template #384
• Update README to include notes on using the new issue templates #385