feat: add pr and issue templates

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,19 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ""
+labels: bug
+assignees: ""
+---
+
+**What steps did you take and what happened:**
+[A clear and concise description of what the bug is.]
+
+**What did you expect to happen:**
+
+**Anything else you would like to add:**
+[Miscellaneous information that will assist in solving the issue.]
+
+**Environment:**
+
+- Attest version: