Created template for issues

.github/issue_template.md

+### Issue summary
+
+
+### Executed command (if any)
+
+
+### OpenPose output (if any)
+
+
+### Type of issue
+Keep only your type and delete the rest. You might select multiple topics:
+- Compilation/installation error
+- Execution error
+- Help wanted
+- Question
+- Enhancement / offering possible extensions / pull request / etc
+- Other (type your own type)
+
+### Your system configuration
+**Operating system** (`lsb_release -a` on Ubuntu):
+**CUDA version** (`cat /usr/local/cuda/version.txt` in most cases):
+**cuDNN version**:
+**GPU model** (`nvidia-smi`):
+Compiler (`gcc --version` on Ubuntu):