Create issue templates

This should help with collecting user's issues. It also force them to think about what they are posting.

.github/ISSUE_TEMPLATE/---bug-report.md

@@ -0,0 +1,22 @@
+---
+name: "\U0001F41B Bug report"
+about: Report errors and problems.
+
+---
+
+**wkhtmltopdf version(s) affected**: x.y.z 
+
+**OS information**
+<!-- Your OS specification -->
+
+**Description**
+<!-- A clear and concise description of the problem. -->
+
+**How to reproduce**
+<!-- Html/css code and/or command line arguments needed to reproduce the problem. -->
+
+**Expected behavior**
+<!-- A clear and concise description of what you expected to happen. -->
+
+**Possible Solution**  
+<!--- Optional: only if you have suggestions on a fix/reason for the bug -->

.github/ISSUE_TEMPLATE/---documentation-issue.md

@@ -0,0 +1,8 @@
+---
+name: "\U0001F56E Documentation issue"
+about: Ideas/problems with a documentation.
+
+---
+
+**Description**  
+<!-- A clear and concise description of the problem/improvement. -->

.github/ISSUE_TEMPLATE/---feature-request.md

@@ -0,0 +1,11 @@
+---
+name: "\U0001F680 Feature request"
+about: Ideas for new features and improvements.
+
+---
+
+**Description**
+<!-- A clear and concise description of the new feature. -->
+
+**Example**  
+<!-- A simple example of the new feature in action. -->

.github/ISSUE_TEMPLATE/--packaging-issue.md

@@ -0,0 +1,10 @@
+---
+name: "⛔ Packaging issue"
+about: See https://github.com/wkhtmltopdf/packaging for packaging issues.
+
+---
+
+wkhtmltopdf has its own dedicated repository for packaging. Please open your
+packaging-related issue at https://github.com/wkhtmltopdf/packaging
+
+Thanks!

.github/ISSUE_TEMPLATE/--support-question.md

@@ -0,0 +1,12 @@
+---
+name: "⛔ Support Question"
+about: See https://wkhtmltopdf.org/support.html for questions.
+
+---
+
+We use GitHub issues only to discuss about wkhtmltopdf bugs and new features. For
+this kind of questions about using wkhtmltopdf, please use
+any of the support alternatives shown in https://wkhtmltopdf.org/support.html or 
+post an issue on https://stackoverflow.com/.
+
+Thanks!

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,22 @@
+---
+name: Bug report
+about: Report errors and problems.
+
+---
+
+**wkhtmltopdf version(s) affected**: x.y.z 
+
+**OS information**
+<!-- Your OS version -->
+
+**Description**
+<!-- A clear and concise description of the problem. -->
+
+**How to reproduce**
+<!-- Html/css code and/or command line arguments needed to reproduce the problem. -->
+
+**Expected behavior**
+<!-- A clear and concise description of what you expected to happen. -->
+
+**Possible Solution**  
+<!--- Optional: only if you have suggestions on a fix/reason for the bug -->