Update issue templates

Bug reporters most of the time don't know what and how much info they
should share with us.

I heavily based the bug report template on Podman's[0].

[0] https://github.com/containers/podman/blob/master/.github/ISSUE_TEMPLATE.md

https://github.com/containers/toolbox/pull/459

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,52 @@
+---
+name: Bug report
+about: Toolbox's bug report template
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of *what the bug is*. If possible, re-run the command(s) with `--log-level debug` and put the output here.
+
+**Steps how to reproduce the behaviour**
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behaviour**
+A clear and concise description of what you *expected to happen*.
+
+**Actual behaviour**
+A clear and concise description of what *actually happened*.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Output of `toolbox --version` (v0.0.90+)**
+e.g., `toolbox version 0.0.90`
+
+**Toolbox package info (`rpm -q toolbox`)**
+e.g., `toolbox-0.0.18-2.fc32.noarch`
+
+**Output of `podman version`**
+e.g.,
+```
+Version:            1.9.2
+RemoteAPI Version:  1
+Go Version:         go1.14.2
+OS/Arch:            linux/amd64
+```
+
+**Podman package info (`rpm -q podman`)**
+e.g., `podman-1.9.2-1.fc32.x86_64`
+
+**Info about your OS**
+e.g., Fedora Silverblue 32
+
+**Additional context**
+Add any other context about the problem here.
+When did the issue start occurring? After an update (what packages were updated)?
+If the issue is about operating with containers/images (creating, using, deleting,..), share here what image you used. If you're unsure, share here the output of `toolbox list -i` (shows all toolbox images on your system).

.github/ISSUE_TEMPLATE/feature-request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Toolbox's feature request template
+title: ''
+labels: feature request
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here. If a different tool has the functionality you're requesting, share it here.