Added new language Swedish all translated and fixed one english misspelling

[robgha01]

Description

Added all nesessery code to add a new language "Swedish" copy paste existing code and renaming to correct culture. Found a misspelling in the en tree

Motivation and Context

This adds my native language so i can actually use this lovely pice of program

How Has This Been Tested?

Opened the program and checked that all translates were looking ok

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [x] None of the above as this is just translations

Checklist:

• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.
• [ ] I have included a migration scheme (If type of change is breaking change)