Update issue templates (#144)

* Update issue templates

Add an issue template for bug reports

* Update bug_report.md

Changing the "Desktop" label to "System in which VulnWhisperer runs"

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,38 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Affected module**
+Which one is the module that is not working as expected, e.g. Nessus, Qualys WAS, Qualys VM, OpenVAS, ELK, Jira...) 
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**System in which VulnWhisperer runs (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.
+
+## Important Note
+As VulnWhisperer relies on ELK for the data aggregation, it is expected that you already have an ELK instance or the knowledge to deploy one. 
+In order to speed up deployment, we provide an updated and tested docker-compose file which deploys all the needed infrastructure and we will support its deployment, but we will not be giving support to ELK instances.