Update issue templates

Author: daniel-montalvo

.github/ISSUE_TEMPLATE/rules-issue-template.md

@@ -0,0 +1,17 @@
+---
+name: Rules issue template
+about: issues related with ACT Rules
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Please describe the issue with references and relevant examples where necessary.
+
+--- or ---
+
+If authoring a proposal for a new rule, choose from one of the issue templates:
+
+- [Atomic Rule Template](https://raw.githubusercontent.com/act-rules/act-rules.github.io/develop/pages/design/atomic-template-empty.md)
+- [Composite Rule Template](https://raw.githubusercontent.com/act-rules/act-rules.github.io/develop/pages/design/composite-template-empty.md)