Update issue templates (#142)

.github/ISSUE_TEMPLATE/bug-.md → .github/ISSUE_TEMPLATE/🐛-bug-report.md

 ---
-name: 'Bug:'
+name: "\U0001F41B Bug report"
 about: Create a report to help us improve
 title: ''
-labels: ''
+labels: bug
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/🚀-feature-request.md

+---
+name: "\U0001F680 Feature request"
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+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.

.github/ISSUE_TEMPLATE/🤔-questions-and-help.md

+---
+name: "\U0001F914 Questions and Help"
+about: Ask a usage or consultation question
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+