Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,28 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[Bug Placeholder Name]"
+labels: bug
+assignees: ''
+
+---
+
+## Description
+
+Any general details about the bug should go here.
+
+### To Reproduce
+Steps to reproduce the behavior, if available.
+
+### Expected behaviour
+(Optional) What do you expect to happen instead?
+
+### Screenshots
+(Optional) If applicable, add screenshots! This is particularly useful for graphical glitches.
+
+### Environment:
+Report any useful system details here
+
+ - OS [e.g. NixOS, Debian, Ubuntu, Windows]
+ - GHCiTUI Version [e.g. 0.1.0.0]
+ - If building from source, `cabal freeze` output.