Update issue templates (#188)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,37 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Run GoFlow2 with arguments '...'
+2. Receive samples '....'
+3. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Captures**
+If applicable, add output (JSON, protobuf), packet captures and device configuration.
+
+**Sampler device:**
+ - Brand: [e.g. Cisco, Juniper, Arista, Mikrotik]
+ - Model: [e.g. MX, QFX]
+ - Version: [e.g. 22]
+ - Estimated flow traffic: [e.g. 5000 samples per second]
+
+**GoFlow2:**
+ - Version: [e.g. v2.0.0]
+ - Environment: [e.g. Kubernetes, Docker, Debian package]
+ - OS: [e.g. Linux Ubuntu Server 23.04]
+
+**Additional context**
+Add any other context about the problem here.