Provide additional links when creating new issue

Author: bkoelman

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,6 +1,6 @@
 ---
 name: Bug report
-about: Create a report to help us improve
+about: Create a report to help us improve.
 title: ''
 labels: 'bug'
 assignees: ''

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,14 @@
+blank_issues_enabled: true
+contact_links:
+- name: Documentation
+  url: https://www.jsonapi.net/usage/resources/index.html
+  about: Read our comprehensive documentation.
+- name: Sponsor JsonApiDotNetCore
+  url: https://github.com/sponsors/json-api-dotnet
+  about: Help the continued development.
+- name: Ask on Gitter
+  url: https://gitter.im/json-api-dotnet-core/Lobby
+  about: Get in touch with the whole community.
+- name: Ask on Stack Overflow
+  url: https://stackoverflow.com/questions/tagged/json-api
+  about: The best place for asking general-purpose questions.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,6 +1,6 @@
 ---
 name: Feature request
-about: Suggest an idea for this project
+about: Suggest an idea for this project.
 title: ''
 labels: 'enhancement'
 assignees: ''

.github/ISSUE_TEMPLATE/question.md

@@ -1,6 +1,6 @@
 ---
 name: Question
-about: Ask a question
+about: Ask a question.
 title: ''
 labels: 'question'
 assignees: ''