Data processor improvements, variable placements inside of structs, Japanese translation

Changelog

Addition

• Added better help messages for when Plugins are missing or outdated
• Added German translation to the Windows plugin
• Added Japanese translation. Thanks a lot to @gnuhead-chieb
• Added highlighting to matched yara rules

Data processor

• Added Digram, Layered Distribution, Byte Distribution and Image visualizer nodes to the data processor
• Added selected region node

Pattern Language

• Improved integer literal parsing, added hex-representation of floats
• Allow assigning to global variables inside of structs
• Allow variable placements inside of structs. This is especially useful for calculated pointers
• Fixed issues with #pragma once and #include
• Added [[left_to_right]] and [[right_to_left]] attribute for bitfields
• Added [[format_entries]] attribute to add a formatting function to all array entries
• Fixed precedence of comparison operators
• Allow patterns with nested children (structs, bitfields, arrays and unions) to be selected by clicking on them in the pattern data view
• Correctly disallow usage of negative values for array and padding sizes
• Fixed control flow statements (return, continue and break) not being applied correctly
• Fixed scopes not always being popped correctly. Thanks to @Diadlo

Improvements

• Massively refactored ImHex.
  • The main application is now completely free of any ImHex-related code and purely acts as a loader
  • The built-in plugin and libimhex now contain all functionality
• Improved integer parsing in the pattern language
• Drastically improved highlighting performance
• Only show file chooser popup if there's actually files to list
• Disable bookmark toolbar icon if no bytes are selected
• Added a dedicated hex input text box

Bug Fixes

• Fixed strings still being displayed incorrectly in the pattern data view
• Fixed pattern source code being deleted wrongly when switching to a different data provider
• Fixed docking to main window not always working
• Fixed icon being broken on macOS
• Fixed incorrect capstone include path
• Fixed a crash when opening files from the recent files list. Thanks to @Diadlo
• Fixed crash when opening a read only file on Linux. Thanks to @bigfoot547
• Fixed hex editor search popup buttons not working correctly. Thanks to @Diadlo
• Fixed columns in diff view being misaligned. Thanks to @twevs

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