feat(docs): Add CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,22 @@
+# How to contribute to NordigenDotNet
+
+### Did you find a bug?
+
+1. **Ensure the bug was not already reported** by searching on GitHub under
+   [Issues](https://github.com/VMelnalksnis/NordigenDotNet/issues?q=is%3Aissue+label%3Abug).
+
+2. If you're unable to find an issue addressing the problem,
+   [open a new one](https://github.com/VMelnalksnis/NordigenDotNet/issues/new?assignees=VMelnalksnis&labels=bug&template=bug_report.md).
+   Be sure to include a **title and clear description**,
+   as much relevant information as possible,
+   and, if possible, a **code sample** or an **executable test case**
+   demonstrating the expected behavior that is not occurring.
+
+### Do you want to request a new feature or change?
+
+1. **Ensure the feature is not already in progress or rejected** by searching on GitHub under
+   [Issues](https://github.com/VMelnalksnis/NordigenDotNet/issues?q=is%3Aissue+label%3Aenhancement).
+   If it exists, make sure to add a +1 reaction to show your interest in the feature.
+
+2. If you're unable to find an issue regarding this feature,
+   [open a new one](https://github.com/VMelnalksnis/NordigenDotNet/issues/new?assignees=VMelnalksnis&labels=enhancement&template=feature_request.md).

NordigenDotNet.sln

@@ -9,6 +9,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		stylecop.json = stylecop.json
 		.editorconfig = .editorconfig
 		version = version
+		CONTRIBUTING.md = CONTRIBUTING.md
 	EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VMelnalksnis.NordigenDotNet", "source\VMelnalksnis.NordigenDotNet\VMelnalksnis.NordigenDotNet.csproj", "{C70F5B40-0A36-45CB-921B-09EA1F9A63AD}"