Add CodeMenu

[wiktorwojcik112]

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Types of Changes

• New addition to list
• Fixing bug in existing item in list
• Removing item from list
• Changing structure (organization) of list

Proposed Changes

I'm not sure if adding your own apps is allowed, but this pull request adds a project that I have been working on - CodeMenu. It's a snippets manager with many useful features. It has features like:

• a side window (it contains a list of snippets and filters and allows for drag and dropping, quickly running snippet's code and working with placeholders [either by pre-filling them or filling while copying by long-pressing a card])
• access in IDEs using Suggestions app
• natural language search
• placeholders (there are also advanced ones like shell, date and time too)
• code running and HTML preview
• online snippets database
• useful programming tools (editor for running code, RegEx tester, code image generator and more)
  and more. It's really feature-rich and I'm planning to add more soon. I consider it useful, so I think that other developers will also like it. You can learn more about CodeMenu at its landing page.

PR Checklist

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• I have read the CONTRIBUTING guide
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• I have added necessary documentation (if appropriate)

Further Comments