Added GitHub templates to guide users with new issues.

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+labels: bug
+
+---
+
+A clear and concise description of what the bug is.
+
+**Steps to reproduce:**
+
+1. Open the project [...]
+2. Configure the component [...]
+3. Run example and/or test [...]
+
+Raised error and/or generated log.
+
+**Environment:**
+
+OS, compiler and Brook version to reproduce the problem, e.g.:
+
+- openSUSE Tumbleweed
+- Delphi/FPC N.N.N x86_64
+- Brook N.N.N
+
+Any other information here. If applicable, a screenshot to help explain the problem.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+labels: enhancement
+
+---
+
+A clear and concise description of what should be improved in Brook framework.
+
+Any links, projects or drafts can be referenced if they could help to explain the feature.

.github/ISSUE_TEMPLATE/question.md

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+---
+name: Question
+about: The issue tracker is not for questions. Please ask questions on https://stackoverflow.com/questions/tagged/brookframework.
+labels: question
+
+---
+
+If you have any question about a feature, example, documentation etc., please ask it on https://stackoverflow.com/questions/tagged/brookframework.