Update issue templates

Author: shepmaster

.github/ISSUE_TEMPLATE/crate-addition-or-update-request.md

@@ -0,0 +1,10 @@
+---
+name: Crate addition or update request
+about: Suggest a new or updated crate for the playground
+title: Please add/update [cratename]
+labels: wontfix
+assignees: ''
+
+---
+
+Please read [our crate policy](CRATE_POLICY.md). Any issue opened for a new or updated crate version will be closed with a reference to the same policy.

.github/ISSUE_TEMPLATE/crate-addition-or-update.md

@@ -0,0 +1,12 @@
+---
+name: Crate addition or update
+about: Suggest a new or updated crate for the playground
+title: Please add/update [cratename]
+labels: wontfix
+assignees: ''
+
+---
+
+Please read [our crate policy][policy]. Any issue opened for a new or updated crate version will be closed with a reference to the same policy.
+
+[policy]: https://github.com/integer32llc/rust-playground/blob/master/CRATE_POLICY.md