More unicode fixes

Changelog

Heyo @shutingrz :)

Additions

• Added a backdrop image when no views are open

Improvements

• Automatically restore default layout when a file is opened but no views are open
• Improved stuttering when resizing or minimizing/maximizing the window
• Improved the Full Sources tar size. Thanks to @iTrooz
• Updated various dependencies

Bug Fixes

• Fixed opening files with spaces in their name on Linux
• Fixed various more Unicode issues

Pattern Language

• Custom type formatting
  • Passing custom types to e.g std::print now prints e.g struct Test { 12, 34, 56 } for a Struct named Test with 3 variables
• Fixed a crash when using provider operators

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