Move bug report template from old frontend or update the existing bug report template

[podliashanyk]

Per now the bug report template in this repo is very backend specific. It lacks some sections that were present in the bug report template in Argus-frontend prior to https://github.com/Uninett/Argus-frontend/pull/599 that are very useful when reporting frontend specific bug:

**Describe the bug**
 A clear and concise description of what the bug is.

 **To Reproduce**
 Steps to reproduce the behavior:
 1. Go to '...'
 2. Click on '....'
 3. Scroll down to '....'
 4. See error

 **Expected behavior**
 A clear and concise description of what you expected to happen.

 **Screenshots**
 If applicable, add screenshots to help explain your problem.

 **Desktop (please complete the following information):**
  - OS: [e.g. iOS]
  - Browser [e.g. chrome, safari]
  - Version [e.g. 22]

 **Smartphone (please complete the following information):**
  - Device: [e.g. iPhone6]
  - OS: [e.g. iOS8.1]
  - Browser [e.g. stock browser, safari]
  - Version [e.g. 22]

 **Additional context**
 Add any other context about the problem here.

We should either add a new bug report template (f.e. Bug report (UI)) or extend the existing bug report template.

[lunkwill42]

It is notoriously difficult for end users to discern whether a bug is a "back-end" or "front-end" issue anyway, so I think we need a single bug template that encompasses all types of bugs.

[podliashanyk]

It is notoriously difficult for end users to discern whether a bug is a "back-end" or "front-end" issue anyway, so I think we need a single bug template that encompasses all types of bugs.

Good point