feat: add issue config

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,11 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Box Developer Community
+    url: https://forum.box.com
+    about: Before creating an issue, I have searched the Box Developer Community and my issue isn't already reported there.
+  - name: Issues
+    url: https://github.com/box/box-openapi/issues
+    about: Before creating an issue, I have searched Issues in this repository and my issue isn't already reported there.
+  - name: API Reference
+    url: https://developer.box.com/reference
+    about: Before creating an issue, I have checked that the API documentation doesn't solve my issue.

.github/PULL_REQUEST_TEMPLATE.md

@@ -16,7 +16,7 @@ Re `APIWG-#` (`Jira` ticket)
 - [ ] I have performed a self-review of my own changes
 - [ ] I have run `yarn lint` to make sure my changes pass all linters
 - [ ] I have pulled the latest changes from the upstream developer branch
-- [ ] I have run `yarn build:schema` and included changes in `openapi.json` file if any
+- [ ] I have run `yarn build:schema` and included changes in `openapi.json`
 
 ## Contribution guidelines