add contribution guidelines

Author: krupkat

CONTRIBUTING.md

@@ -0,0 +1,24 @@
+# Contribution guidelines
+
+Feel free to open an issue with your comments / encountered bugs / requests for features. 
+
+In case you want to contribute a PR, please open an issue first with a bit of details about the planned change or comment on an existing issue that you want to work on it.
+
+The repository mostly uses the Google C++ [style guide](https://google.github.io/styleguide/cppguide.html).
+
+## clang-format
+
+ Formatting is checked upon submission, please format your files with the included `.clang-format` configuration. Use the provided scripts for your convenience:
+
+ ```
+ /misc/scripts/format.ps1
+ /misc/scripts/format.sh
+ ```
+## clang-tidy
+
+Static analysis is checked upon submission, please make sure there are 0 clang-tidy warnings in your code, using the included `.clang-tidy` configutaion. Use the provided scripts for your convenience:
+
+ ```
+ /misc/scripts/tidy.ps1
+ /misc/scripts/tidy.sh
+ ```

README.md

@@ -84,9 +84,7 @@ Open the "Developer PowerShell for VS 2022" profile in Windows Terminal and run
 
 Contributions are more than welcome, there is a couple of ideas for enhancements in [open issues](https://github.com/krupkat/xpano/issues) which you could take on - if you start working on one of them, please add a comment there. 
 
-Feel free to open an issue with your comments / encountered bugs / requests for features. 
-
-In case you want to contribute a PR, please open an issue first with a bit of details about the planned change.
+Please check the [contribution guidelines](https://github.com/krupkat/xpano/blob/main/CONTRIBUTING.md) for further details regarding formatting and coding style.
 
 ## License