TL;DR: Improved developer productivity for many contributors
Add a shared .editorconfig so contributors get lightweight,
editor-native hints while writing code instead of only discovering
formatting issues later in style checks.
This is advisory, but useful: editors can already guide indentation,
whitespace, line endings, and final newlines as you type. They can also
show a visual guide at the 80-character line width, which is one of the
main motivations here. Most LLM-generated code and contributions over
the past year have already conventionally followed the 80-character
limit, so this makes the expected style visible and consistent for
everyone.
.editorconfig is a decade-old standard, and virtually every editor or
IDE supports it.
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
