übernahme Code Shortcut

CONTRIBUTING.md

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+There are a number of ways to contribute for people all skills and skill levels.
+
+Translation
+-----------
+
+We use the
+[Transifex](https://explore.transifex.com/ddennedy/shotcut/)
+collaboration web site to translate the Shotcut user interface.
+Additional languages are already started but have not yet reached the
+60% minimum level to be included in a Shotcut release.
+
+Please do not open a pull request to update a translation. Your request
+will be rejected unless it is for the English language to add a plural form
+or disambiguation comment.
+
+Support Other Users
+-------------------
+
+An easy way for non-programmers to help is simply to participate in the
+[Shotcut Forum](https://forum.shotcut.org/) by answering user's questions.
+Alternatively, consider making a tutorial video on YouTube or similar.
+
+Write Documentation
+-------------------
+
+We are now building [documentation in the
+forum](https://forum.shotcut.org/c/docs/docs-english) using its wiki-mode where
+any trusted user (some forum experience required or manual promotion) can edit
+the topic. Please treat this like real documentation you would see in a user
+manual. Some day these topics might get compiled into an offline help file or
+large document. Initially, we only have English, but it is a sub-category with
+the hope that some day a volunteer will offer to translate to another language.
+
+Report a Bug
+------------
+
+You can report a bug on the [Shotcut Forum](https://forum.shotcut.org/) using
+the Bug category or on [GitHub Issues](https://github.com/mltframework/shotcut/issues/). Bug reports must include the Shotcut version, your operating system,
+and the steps. It can helpful to include a screenshot, screencast video, or
+project file. Please do not use this to request a feature.
+
+Make a Preset
+-------------
+
+After you make a filter preset that you think others would like,
+you can share it on the
+[Shotcut Forum](https://forum.shotcut.org/) or as a
+[GitHub Pull Request](https://github.com/mltframework/shotcut/pulls).
+You can locate presets on your system by choosing **Settings > App Data
+Directory > Show...** and navigating to the presets folder.
+
+Add a Filter
+------------
+
+The engine has many additional filters that are not yet exposed. You can easily
+add a Shotcut UI for it.
+You can see existing filter UIs and add your own in your Shotcut install folder, look in the folder
+share/shotcut/qml/filters
+(Shotcut.app/Contents/Resources/shotcut/qml/filters on macOS).
+
+See [How to Make a Plugin](https://www.shotcut.com/notes/make-plugins/)
+for more information. You can share your filter UI on the
+[Shotcut Forum](https://forum.shotcut.org/) or as a [GitHub Pull
+Request](https://github.com/mltframework/shotcut/pulls).
+
+Write Code
+----------
+
+The biggest impact you can make is to contribute a code change and submit that
+as a [GitHub Pull Request](https://github.com/mltframework/shotcut/pulls).
+To make working on Shotcut code and some of its dependencies easier we provide
+some SDKs with setup instructions. Of course, you are free to try to work on
+the Shotcut code another way, but there is no help provided for that as it gets
+very complicated quickly.
+
+Your code format must be consistent with ours and will be checked automatically
+using clang-format version 14. You can get that and run something like `ninja clang-format`
+and/or `ninja clang-format-check`.
+
+[How To Use the Windows SDK](https://www.shotcut.com/notes/windowsdev/)
+
+All code contributions should assign copyright to Meltytech, LLC; however,
+exceptions may be considered for a major contribution.
+
+See our [User Interface Conventions](https://www.shotcut.com/notes/ui-conventions/) for
+info about usage of case, alignment, and spacing.