Add install issue template

.github/ISSUE_TEMPLATE/installation-issue.md

+---
+name: Installation issue
+about: Template for issues encountered during installation
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Installation type**
+Did you install manually or did you use the bbb-install script?
+
+**Console output**
+Please include the full console output from the install.
+
+**Additional context**
+Add any other context about the problem here.