Migrating all javascript files to typescript files

[tyr0wl]

First leg work in adding proper typescript support to the project. Most errors/missing types are just any'd away for now, to fix properly later. For now, priority was to get the build mostly error free (note: errors in typescript do not necessarily prevent emitting js). Almost all changes are non-functional, not changing the function of the app.

• Removing file extensions from module imports
• Adding first basic types
• Quick-Fixes for most typing errors
• Some formatting
• some small bug fixes
• refactor math module
• update paths config in tsconfig and jsconfig
• update package-lock
• Homogenize image referencing throughout the project
• introduce path mapping for images folder

[DenysAshikhin]

Done, looks fine and works!