Add feature request issue template

Author: Namitjain07

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,19 @@
+---
+name: Feature Request
+about: Suggest an enhancement for PrivacyFirst
+labels: enhancement
+---
+
+# Feature Request
+
+**Describe the feature**
+Explanation of what you want added or improved.
+
+**Why is this needed?**
+Security, usability, or performance reason.
+
+**Possible solution**
+(Optional)
+
+**Additional context**
+Anything else relevant.