Fix #299: Added bug and feature issue templates

.gitlab/issue_templates/Bug.md

+<!--
+Hi there! You are reporting a bug on this project, and we want to thank you!
+
+To ensure your bug report is as useful as possible, please try to stick
+to the following structure. You can leave the parts text between `<!- ->`
+markers untouched, they won't be displayed in your final message.
+
+Please do not edit the following line, it's used for automatic classification
+-->
+
+/label ~"Type: Bug" ~"Status: Need triage"
+
+## Steps to reproduce
+
+<!--
+Describe the steps to reproduce the issue, like:
+
+1. Visit the page at /artists/
+2. Type that
+3. Submit
+-->
+
+## What happens?
+
+<!--
+Describe what happens once the previous steps are completed.
+-->
+
+## What is expected?
+
+<!--
+Describe the expected behaviour.
+-->
+
+## Context
+
+<!--
+If relevant, share additional context here like:
+
+- Browser type and version (for front-end bugs)
+- Instance configuration (Docker/non-docker, nginx/apache as proxy, etc.)
+- Error messages, screenshots and logs
+-->

.gitlab/issue_templates/Feature request.md

+<!--
+Hi there! You are about to share feature request or an idea, and we want to thank you!
+
+To ensure we can deal with your idea or request, please try to stick
+to the following structure. You can leave the parts text between `<!- ->`
+markers untouched, they won't be displayed in your final message.
+
+Please do not edit the following line, it's used for automatic classification
+-->
+
+/label ~"Type: New feature" ~"Status: Need triage"
+
+## What is the problem you are facing?
+
+<!--
+Describe the problem you'd like to solve, and why we need to add or
+improve something in the current system to solve that problem.
+
+Be as specific as possible.
+-->
+
+## What are the possible drawbacks or issues with the requested changes?
+
+<!--
+Altering the system behaviour is not always a free action, and it can impact
+user experience, performance, introduce bugs or complexity, etc..
+
+If you think about anything we should keep in mind while
+examining your request, please describe it in this section.
+-->
+
+## Context
+
+<!--
+If relevant, share additional context here like:
+
+- Links to existing implementations or examples of the requested feature
+- Screenshots
+-->

changes/changelog.d/299.misc

+Added bug and feature issue templates (#299)