Create new.md

Author: cijothomas

.github/ISSUE_TEMPLATE/new.md

@@ -0,0 +1,15 @@
+---
+name: Metrics
+about: Issues related to the specification/metrics directory
+labels: spec:metrics
+---
+
+**What are you trying to achieve?**
+
+What did you expect to see?
+
+**Additional context.**
+
+Add any other context about the problem here. If you followed an existing documentation, please share the link to it.
+
+<sub>**Tip**: [React](https://github.blog/news-insights/product-news/add-reactions-to-pull-requests-issues-and-comments/) with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding `+1` or `me too`, to help us triage it. Learn more [here](https://opentelemetry.io/community/end-user/issue-participation/).</sub>