feat: add issue template

Resolves #128

.github/ISSUE_TEMPLATE/default.md

@@ -0,0 +1,23 @@
+---
+name: Default Issue Template
+about: Standard template for creating new issues
+title: ''
+labels: ''
+assignees: ''
+---
+
+*insert background information here*
+
+## Completion Criteria:
+
+- *e.g. the specs of a deliverable*
+- *e.g. a measurable goal/metric to be achieved*
+- *etc.*
+
+## Relevant Links:
+
+[description of link](url of any relevant comment, document, website, etc.)
+[description of link](url of any relevant comment, document, website, etc.)
+[description of link](url of any relevant comment, document, website, etc.)
+
+*reminder to add a "Time:..." label and delete this comment*