Add issue templates

Author: markus-wa

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Download link to an affected demo: HLTV, ESEA, Matchmaking share link or other
+
+Code:
+```go
+func x() {
+}
+```
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Library version**
+v1.0.0-beta.0
+
+**Additional context**
+Add any other context about the problem here - like your OS if that could be relevant.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+**Higher goal**
+Describe what you're trying to do on a high level. i.e. 'I want to create a heatmap of x but can't get that data' instead of 'I want a new function A() to provide me with data x'.
+
+**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.